Suzuki Swift Speedometer Explained: Material Grades, Specifications, and Industrial Implementation

Types of Suzuki Swift Speedometers

The Suzuki Swift speedometer is a vital instrument that displays the vehicle's real-time speed, enabling safe and legal driving. As automotive technology has evolved, so have the types of speedometers used in the Suzuki Swift. Modern Swift models integrate advanced digital systems, while earlier versions relied on mechanical designs. Understanding the different types helps drivers appreciate their functionality, accuracy, and role in overall vehicle performance.

Analog Speedometer

Featuring a traditional dial and moving needle, the analog speedometer provides a classic, intuitive display of vehicle speed.

Advantages

• Simple, immediate visual feedback
• High readability at a glance
• Reliable mechanical or electronic operation
• Familiar design for most drivers

Limitations

• Less precise than digital displays
• Limited ability to show additional data
• Potential for mechanical wear over time

Best for: Classic car enthusiasts, base trim models, drivers who prefer traditional gauges

Digital Speedometer

Utilizing LCD or LED screens, digital speedometers display speed numerically with high precision and customizable interfaces.

Advantages

• Exact speed readout (e.g., 62 km/h)
• Customizable display themes and colors
• Integration with trip computers and driver aids
• Less mechanical complexity

Limitations

• Glare or visibility issues in direct sunlight
• Dependent on electrical systems and software
• May feel less intuitive to some drivers

Best for: Modern trims, tech-savvy drivers, fuel-efficient and hybrid models

Combined (Analog-Digital) Speedometer

A hybrid design that merges a traditional analog dial with a digital display, offering the best of both worlds.

Advantages

• Visual familiarity with needle gauge
• Digital panel shows trip data, fuel economy, and warnings
• Enhanced driver information without distraction
• Balances aesthetics and functionality

Limitations

• More complex system to repair or replace
• Higher cost if integrated into digital cluster
• Potential software glitches in digital segment

Best for: Mid-to-high trim Suzuki Swift models, everyday drivers seeking extra data

GPS-Based Speedometer

Uses satellite signals to calculate speed based on positional changes, independent of wheel sensors.

Advantages

• Highly accurate, unaffected by tire size or slippage
• Excellent for navigation systems and tracking
• Can serve as backup to primary speedometer
• Useful for performance monitoring and tuning

Limitations

• Signal loss in tunnels or urban canyons
• Slight delay in real-time updates
• Typically aftermarket or app-based unless factory-installed

Best for: Navigation systems, fleet tracking, performance tuning, and supplemental use

Tachometer-Integrated Display

Combines speed reading with engine RPM monitoring, often found in sportier Swift variants.

Advantages

• Helps optimize gear shifts for performance or efficiency
• Enhances driving engagement
• Useful for manual transmission drivers
• Provides real-time engine feedback

Limitations

• Less relevant for automatic or CVT drivers
• Takes up dashboard space
• May distract inexperienced drivers

Best for: Sport trims (e.g., Swift Sport), manual transmission models, driving enthusiasts

Mechanical vs. Electronic Systems

Refers to the underlying technology: mechanical uses cables, while electronic uses wheel speed sensors.

Electronic Advantages

• Higher accuracy and reliability
• Supports ABS, traction control, and cruise control
• Lower maintenance needs
• Standard in modern Suzuki Swift models

Mechanical Drawbacks

• Cable wear and potential breakage
• Less precise over time
• Not compatible with advanced driver aids

Best for: Understanding evolution of Swift instrumentation; electronic is now standard

Type	Accuracy	Readability	Features	Common in Swift Models
Analog	Good	Excellent	Basic speed display	Older generations, base trims
Digital	Excellent	Very Good	Multi-info display, customization	Newer models, higher trims
Combined	Very Good	Excellent	Speed + trip/fuel data	Most common in current Swifts
GPS-Based	Excellent	Good	Navigation integration	Aftermarket or infotainment
Tachometer-Integrated	Good	Very Good	RPM monitoring, sport modes	Swift Sport, manual variants
Electronic (Modern)	Excellent	Excellent	ABS, cruise control compatible	All current Swift models

Expert Tip: If your Suzuki Swift's speedometer shows inaccurate readings, check for correct tire size and pressure first. In electronic systems, a faulty wheel speed sensor or ECU glitch may also be the cause—diagnostic scanning is recommended.

Specifications and Maintenance of Suzuki Swift Speedometer

The Suzuki Swift speedometer is a vital instrument cluster component that provides real-time speed feedback to the driver. Modern Swift models integrate both analog and digital technologies to deliver accurate, reliable, and user-friendly speed monitoring. Understanding its key components, functionality, and maintenance requirements ensures optimal performance and enhances driving safety.

Key Components and Features

Speed Sensor & Electric Motor

Unlike traditional mechanical systems, the Suzuki Swift uses an electronic speed sensor (often located on the transmission) that sends pulse signals to the instrument cluster. These signals drive a small electric stepper motor inside the speedometer, which precisely moves the needle in real time. This system improves accuracy and reduces mechanical wear compared to older cable-driven designs.

The electric motor responds instantly to changes in vehicle speed, ensuring smooth and responsive needle movement across all driving conditions.

Speedometer Cable (in Older Models)

In earlier Suzuki Swift generations, a mechanical speedometer cable connected the transmission to the dashboard gauge. As the vehicle moved, the rotating cable turned the speedometer mechanism via a flexible shaft. While reliable, these cables are prone to wear, stretching, or seizing over time, leading to inaccurate readings or complete failure.

Modern Swifts have largely phased out physical cables in favor of fully electronic systems, improving reliability and reducing maintenance needs.

Digital Display & Information Screen

Most current Suzuki Swift models feature a hybrid or fully digital instrument cluster. The speed is displayed both via an analog needle and a digital readout, often part of a multi-function LCD screen. This digital interface can show additional data such as trip distance, fuel economy, average speed, and odometer readings.

The real-time digital display enhances readability and allows for integration with advanced driver assistance systems (ADAS), such as speed limit recognition and navigation prompts.

Speed Warning System

Many Suzuki Swift trims include a customizable speed warning function. Drivers can set a threshold speed (e.g., 70 km/h or 50 mph), and when exceeded, the system triggers an audible alert or visual indicator on the dashboard. This feature promotes safer driving habits, especially in urban or variable-speed zones.

The warning system is typically programmable through the vehicle’s onboard menu and works in conjunction with GPS or preset values depending on model year and region.

Backlighting & Night Visibility

The speedometer is equipped with LED backlighting that automatically adjusts based on ambient light conditions. This ensures clear visibility during nighttime driving or in tunnels and low-light environments. The illumination is designed to reduce eye strain while maintaining high contrast for quick speed reference.

Some higher trims offer customizable backlight colors or dimming levels, allowing drivers to personalize the instrument panel’s appearance and brightness.

Calibration & Accuracy

Speedometer accuracy is crucial for legal compliance and safe driving. The Suzuki Swift’s electronic system is factory-calibrated, but changes such as tire size, tread depth, or aftermarket wheels can affect readings. Recalibration may be required after significant modifications.

Professional diagnostic tools (such as Suzuki’s official OBD2 scanners) can perform calibration procedures to ensure the displayed speed matches the actual road speed within acceptable tolerances (typically ±5%).

Component	Function	Maintenance Tip
Speed Sensor	Transmits speed data electronically	Inspect for dirt or damage; ensure secure electrical connections
Electric Motor (Stepper)	Drives analog needle movement	Monitor for erratic needle behavior; replace if malfunctioning
Digital Display	Shows speed and trip data	Check for pixel issues; keep software updated if applicable
Backlight System	Enables night visibility	Test brightness levels; replace bulbs/LEDs if dimming occurs
Speed Warning	Alerts driver above preset speed	Verify settings regularly; test alarm functionality

Essential Maintenance Practices

Regular Functional Checks: Periodically verify that the speedometer responds correctly to acceleration and deceleration. Look for lag, jitter, or frozen readings, which may indicate sensor or motor issues.

Inspect Wiring and Connectors: Check the instrument cluster wiring harness for corrosion, loose connections, or damaged insulation. Moisture ingress can disrupt signal transmission and cause intermittent faults.

Clean the Instrument Panel: Use a soft, lint-free cloth and non-abrasive cleaner to remove dust, fingerprints, and smudges from the speedometer cover. Avoid harsh chemicals that could damage plastic or anti-glare coatings.

Monitor for Error Messages: If the dashboard displays warnings like “Check Gauges” or “Speed Sensor Fault,” address them promptly. These alerts often precede complete speedometer failure.

Professional Diagnostics: For persistent issues or after major repairs (e.g., transmission work), consult a certified Suzuki technician. They can use diagnostic software to read error codes, recalibrate the system, and replace faulty components.

Important: Never attempt to disassemble the instrument cluster unless qualified. Internal components are sensitive to static electricity and improper handling. Incorrect repairs can lead to permanent damage or inaccurate speed readings, which may result in traffic violations or safety risks. Always follow the manufacturer’s service guidelines and use OEM or approved replacement parts.

In summary, the Suzuki Swift speedometer combines electronic precision with user-friendly design to deliver accurate speed information. It relies on a network of sensors, electric motors, and digital displays to keep drivers informed. Features like speed warnings and adaptive backlighting enhance safety and convenience. Regular inspection, cleaning, and professional calibration are essential for maintaining accuracy and reliability. When in doubt, seek assistance from authorized service centers to ensure long-term performance and compliance with safety standards.

How to Choose Suzuki Swift Speedometer

Selecting the right speedometer for a Suzuki Swift is a critical decision for business buyers, especially those managing fleets, repair shops, or vehicle refurbishment operations. A properly functioning speedometer ensures regulatory compliance, accurate driver feedback, and long-term vehicle reliability. To make an informed choice, several key factors must be evaluated to ensure compatibility, functionality, and cost-effectiveness.

Vehicle Compatibility (Make, Model & Year)

The Suzuki Swift has undergone multiple design updates across generations, meaning speedometers are not universally interchangeable. It's essential to match the speedometer precisely to the vehicle’s generation, trim level, and production year.

• The 2011–2016 Swift (third generation) uses analog-dominant instrument clusters with mechanical or electronic speed sensing
• The 2017–2023 models (fourth generation) feature more digital integration, including multi-information displays (MID)
• 2024+ models may include enhanced connectivity and CAN bus communication protocols
• Hybrid variants may have unique calibration requirements for speed and energy consumption display

Key consideration: Always verify compatibility using the VIN or OEM part number to avoid installation issues.

Analog vs. Digital Speedometers

The choice between analog and digital speedometers impacts not only aesthetics but also maintenance, repair costs, and integration with vehicle systems.

• Analog gauges use physical needles and are typically easier and cheaper to service or replace individually
• Digital displays offer enhanced features like customizable interfaces, backlighting, and real-time data overlays
• Digital clusters often require programming or ECU synchronization after installation
• Used or refurbished digital clusters may retain previous odometer data, raising legal and ethical concerns

Pro tip: For fleet operators and repair businesses, analog or hybrid clusters often provide better cost control and simpler diagnostics.

Functional Features & Driver Assistance

Modern Suzuki Swift speedometers do more than display speed—they integrate with vehicle monitoring and safety systems to support driver awareness and compliance.

• Trip meter and odometer: Essential for tracking maintenance intervals and fuel efficiency across business vehicles
• Average speed and fuel economy: Helps optimize driving behavior and reduce operational costs
• Speed alert systems: Audible or visual warnings when preset speed limits are exceeded—ideal for enforcing safe driving policies
• Low fuel warning and service indicators: Integrated alerts improve vehicle uptime and preventive maintenance

Critical factor: Ensure the speedometer supports all factory features to maintain full instrument panel functionality.

Budget & Total Cost of Ownership

While initial purchase price is important, business buyers should evaluate long-term costs including installation, calibration, and potential downtime.

• Analog speedometers: Typically $80–$150; lower repair costs and easier to source
• Digital clusters: Range from $200–$400; may require software tools for calibration
• Labor costs increase with digital units due to programming and diagnostic time
• Used OEM units can reduce cost but carry risks like hidden mileage or malfunctioning sensors

Smart choice: Consider remanufactured OEM clusters—they offer modern features at a lower cost with quality assurance.

Supplier Reliability & Warranty

Choosing a trusted supplier is crucial for ensuring product authenticity, warranty coverage, and after-sales support—especially when outfitting multiple vehicles.

• Reputable suppliers provide clear compatibility charts and VIN-based lookup tools
• Look for at least a 1-year warranty on electronic components
• Ensure spare parts (e.g., lenses, connectors, circuit boards) are available for repairs
• Check customer reviews and return policies before bulk purchasing
• Suppliers offering technical support can assist with installation challenges

Quality assurance: Avoid generic aftermarket clusters that may not meet OEM calibration standards.

Installation & Calibration Requirements

Proper installation ensures accurate speed readings and prevents errors in other vehicle systems like ABS, traction control, and transmission shifting.

• Analog units may only require mechanical or plug-in replacement
• Digital clusters often need odometer programming to match the vehicle’s current mileage
• Some models require ECU reinitialization or pairing via diagnostic tools (e.g., Suzuki SDS or generic OBD2 scanners)
• Mismatched calibration can trigger warning lights or affect cruise control operation
• Professional installation is recommended for digital units to avoid warranty voids

Time-saving tip: Purchase pre-programmed units from certified suppliers to reduce shop time.

Professional Recommendation: For business buyers, prioritize OEM-replacement or remanufactured speedometers with verified compatibility. While digital models offer advanced features, analog or hybrid clusters often deliver better value for fleet maintenance and repair operations. Always confirm calibration requirements and ensure the supplier provides technical documentation and support.

Swift Model Year	Speedometer Type	Key Features	Estimated Cost (USD)
2011–2016	Analog with digital MID	Trip meter, fuel gauge, service light	$80–$150
2017–2020	Digital-enhanced analog	Speed alert, average fuel economy, Bluetooth integration	$180–$280
2021–2023	Fully digital cluster (optional)	Customizable display, smartphone mirroring, driver assistance alerts	$250–$400
2024+ (Hybrid models)	Integrated digital dashboard	Energy flow display, eco-driving tips, regenerative braking indicator	$300–$450

Additional Considerations

• Odometer Accuracy: Ensure the replacement speedometer supports correct mileage input to comply with legal and resale standards
• Water & Dust Resistance: Look for IP-rated clusters in regions with harsh weather or off-road use
• Backlighting & Visibility: LED-lit displays improve readability in low-light conditions, enhancing driver safety
• Software Updates: Some digital clusters may require firmware updates—confirm availability with the supplier
• Environmental Compliance: Choose RoHS-compliant units that meet electronic waste and material safety regulations

DIY Suzuki Swift Speedometer Replacement Guide

Replacing the speedometer in a Suzuki Swift is a manageable DIY project for individuals with basic mechanical and electrical knowledge. A faulty or inaccurate speedometer can compromise driving safety and lead to legal issues, so timely replacement is essential. This comprehensive guide provides step-by-step instructions, tool recommendations, compatibility tips, and safety precautions to help you successfully replace your Suzuki Swift's speedometer with confidence and precision.

Safety Warning: Always disconnect the vehicle battery before working on electrical components to prevent short circuits, electrical shocks, or damage to the ECU. Work in a well-lit area and avoid wearing loose clothing or jewelry that could get caught in components.

Step-by-Step Speedometer Replacement Procedure

1. Gather Required Tools and Materials
   • Complete screwdriver set (Phillips and flathead) for removing interior screws
   • Plastic trim removal tools to safely pry off dashboard panels without scratching
   • Socket wrench set (typically 8mm and 10mm sockets) for securing the instrument cluster
   • Torque wrench (optional but recommended) to avoid over-tightening sensitive dashboard bolts
   • Anti-static wrist strap (recommended when handling electronic components)
   • Shop towels and a small container to organize screws and clips
2. Select the Correct Replacement Speedometer
   • Verify compatibility with your Suzuki Swift’s model year, engine type, and trim level
   • Ensure the new unit matches the original in voltage (typically 12V) and signal output (pulses per kilometer or mile)
   • Check if the speedometer includes the correct odometer reading or requires programming
   • Consider purchasing an OEM (Original Equipment Manufacturer) unit or a high-quality aftermarket alternative with warranty
   • Cross-reference part numbers from your old unit or consult a Suzuki dealership for accuracy
3. Disconnect the Vehicle Battery
   • Turn off the ignition and remove the key from the ignition switch
   • Open the hood and locate the battery
   • Use a wrench to disconnect the negative (black) terminal first, then the positive (red) terminal
   • Secure the cables away from the battery posts to prevent accidental reconnection
   • Wait 5–10 minutes to allow the electrical system to fully discharge
4. Remove the Dashboard Trim and Instrument Cluster
   • Use a trim removal tool to gently pry off the lower steering column cover and surrounding dashboard panels
   • Remove screws securing the instrument cluster bezel (usually located on the sides or bottom)
   • Carefully detach any electrical connectors from adjacent controls (e.g., hazard switch, cruise control)
   • Unscrew the instrument cluster mounting bolts using a socket set
   • Gently pull the cluster forward to access the backside while managing connected wiring harnesses
5. Remove the Old Speedometer Unit
   • Locate the speedometer within the instrument cluster (often part of a modular gauge assembly)
   • Disconnect all electrical connectors, noting their positions for reinstallation
   • Unscrew or unclip the speedometer from the cluster housing, depending on model year
   • Remove the unit carefully to avoid damaging needles, LCD screens, or circuit boards
   • Inspect the wiring harness for corrosion, bent pins, or wear before proceeding
6. Install the New Speedometer
   • Align the new speedometer with the mounting points in the instrument cluster
   • Secure it with screws or clips, ensuring a snug but not overly tight fit
   • Reconnect all electrical connectors, verifying they click into place securely
   • If the unit has a mechanical cable (older models), ensure it is properly seated and lubricated
   • Double-check that the display lights, backlighting, and gauge needles move freely
7. Reinstall the Instrument Cluster
   • Slide the cluster back into the dashboard, aligning it with the mounting holes
   • Reattach all mounting screws and tighten them evenly using a torque wrench (if available)
   • Reconnect any previously disconnected control switches or harnesses
   • Reinstall the dashboard trim panels and secure all clips and screws
   • Ensure all panels are flush and no gaps or rattles are present
8. Reconnect the Battery and Power Up
   • Reconnect the positive battery terminal first, followed by the negative terminal
   • Tighten the terminal bolts securely to prevent voltage fluctuations
   • Turn on the ignition (without starting the engine) to check if the speedometer powers up
   • Observe the self-test sequence: all needles should sweep, and lights should illuminate
   • Look for error messages or warning lights on the dashboard

Replacement Stage	Key Tasks	Common Mistakes	Recommended Tools
Preparation	Tool gathering, model verification, battery disconnection	Using incompatible speedometer, skipping battery disconnect	Screwdrivers, trim tools, owner’s manual
Disassembly	Trim removal, cluster access, connector management	Breaking plastic clips, misplacing screws	Trim removal tools, parts tray, flashlight
Component Swap	Electrical disconnection, unit replacement	Forcing connectors, damaging circuit boards	Socket set, anti-static mat, magnifying glass
Reassembly	Cluster reinstallation, trim reattachment	Loose mounting, pinched wires	Torque wrench, multimeter, inspection mirror
Testing	Power-up, calibration check, road test	Skipping calibration, ignoring warning lights	OBD2 scanner, GPS speed check app, test drive checklist

Expert Tip: After installation, use a GPS-based speed app (like Google Maps or Waze) during your first test drive to verify the new speedometer’s accuracy at various speeds. A discrepancy of more than 3–5% may indicate a calibration or compatibility issue that needs addressing.

Post-Installation Checks and Maintenance Tips

• Perform a short test drive in a safe area to confirm speed readings match actual road speed
• Check that all other gauges (tachometer, fuel, temperature) are functioning normally
• Ensure no dashboard warning lights remain illuminated after startup
• Listen for unusual buzzing, clicking, or flickering in the instrument cluster
• Keep the original speedometer in case reprogramming or warranty service is needed
• Update your vehicle’s service records with the replacement date and part details
• Consider having the vehicle scanned with an OBD2 diagnostic tool to clear any stored errors

Replacing your Suzuki Swift’s speedometer not only restores accurate speed readings but also enhances overall driving safety and compliance with traffic laws. While the process is generally straightforward, attention to detail—especially in component compatibility and electrical connections—is crucial. If you encounter difficulties with calibration, digital displays, or communication with the ECU, consult a professional auto electrician or Suzuki service center. Regular inspection of your instrument cluster can help identify issues early and prevent more complex repairs down the road.

Frequently Asked Questions About Suzuki Swift Speedometer Issues

Q1: How can one tell if a Suzuki Swift speedometer is faulty?

A faulty speedometer on a Suzuki Swift can present several noticeable symptoms that affect both safety and vehicle performance. Recognizing these early signs can help prevent further complications. Common indicators include:

• No Movement: The speedometer needle remains stuck at zero, even when the vehicle is in motion.
• Erratic Behavior: The needle jumps, fluctuates, or spikes randomly while driving, making it difficult to determine actual speed.
• Inaccurate Readings: The displayed speed does not match real-world conditions—such as showing 40 mph when driving at 25 mph, or vice versa.
• Dashboard Warning Lights: The check engine light or a specific speed sensor warning may illuminate on the instrument cluster.
• Physical Damage: Cracks on the dashboard cover, fogging behind the gauge, or visible damage to the instrument cluster can impair readability and functionality.

If any of these issues occur, it’s important to have the speedometer and related components inspected by a qualified technician. Ignoring these signs can compromise driving safety and lead to mechanical misdiagnosis during routine servicing.

Q2: What causes a faulty speedometer in a Suzuki Swift?

The speedometer relies on a network of mechanical and electronic components to function correctly. A failure in any part of this system can result in inaccurate or non-functional speed readings. The most common causes include:

• Defective Vehicle Speed Sensor (VSS): Located on the transmission, this sensor measures wheel speed and sends data to the Engine Control Unit (ECU), which then relays it to the speedometer. A failing VSS is one of the leading causes of speedometer malfunction.
• Damaged Speedometer Cable (in older models): While newer Swifts use electronic sensors, earlier models may use a mechanical cable that can wear out, fray, or disconnect over time.
• Instrument Cluster Failure: Internal circuitry issues, blown bulbs, or soldering problems within the cluster can prevent the speedometer from displaying information properly.
• Electrical Issues: Blown fuses, corroded wiring, loose connectors, or short circuits in the speed signal circuit can interrupt communication between sensors and the dashboard.
• ECU or Software Glitches: In rare cases, software bugs or corrupted data in the vehicle’s computer system can disrupt speed data processing.
• Aftermarket Modifications: Improper installation of audio systems, alarms, or lighting can inadvertently damage wiring connected to the instrument panel.

Diagnosing the root cause often requires scanning the vehicle’s onboard diagnostics (OBD-II) system for error codes and performing a visual and electrical inspection of key components.

Q3: Can a faulty speedometer be repaired?

Yes, in most cases, a faulty speedometer can be repaired—either through component replacement, recalibration, or electronic repair. The appropriate solution depends on the underlying issue:

• Replace the Speed Sensor: If diagnostics confirm a failed VSS, replacing the sensor is usually a straightforward and cost-effective fix.
• Repair or Replace the Instrument Cluster: Clusters can often be repaired by specialists who fix internal circuitry or replace defective gauges. In severe cases, a full cluster replacement or upgrade to a digital unit may be necessary.
• Fix Wiring or Connections: Damaged wires or corroded connectors can be repaired or replaced to restore signal integrity.
• Reprogramming/Software Update: Some issues can be resolved by updating the ECU or instrument cluster firmware, especially after component replacements.
• Professional Calibration: After repairs, the speedometer may need recalibration to ensure accuracy, particularly if new tires or sensors were installed.

While some repairs can be performed at home with the right tools and knowledge, complex electronic diagnostics and cluster repairs are best handled by certified mechanics or auto-electricians to ensure long-term reliability and safety compliance.

Q4: Is it safe or legal to drive with a faulty speedometer?

Driving a Suzuki Swift with a faulty speedometer is neither safe nor legally advisable. Here’s why:

• Safety Risks: Without accurate speed feedback, drivers may unintentionally exceed speed limits or drive too slowly, increasing the risk of accidents, especially on highways or in adverse weather.
• Loss of Related Functions: Modern vehicles use speed data for cruise control, traction control, transmission shifting, and fuel injection. A faulty speedometer may disrupt these systems, reducing vehicle performance and safety.
• Legal Consequences: Operating a vehicle with a known instrument failure can result in fines or penalties during traffic stops or vehicle inspections. In many jurisdictions, a functioning speedometer is a legal requirement.
• Insurance Implications: If involved in an accident while driving with a known defect, insurance claims may be contested or denied due to negligence.
• MOT or Inspection Failure: Vehicles with non-functional speedometers typically fail mandatory safety inspections in countries like the UK, US, and EU member states.

While temporary driving to a repair shop may be unavoidable, prolonged use of a vehicle with a broken speedometer should be avoided. Using GPS-based speed apps as a temporary reference is better than guessing, but it does not eliminate legal or safety risks.