Broken Speedometer? Use Your iPhone as a Replacement
GPS Speedometer provides accurate speed readings when your car, motorcycle, or truck speedometer is broken or inaccurate.
Legal Disclaimer
GPS Speedometer can provide accurate speed tracking (1-2% accuracy) for broken vehicle speedometers in cars, motorcycles, classic cars, and RVs. However, check your local laws as some jurisdictions require functional built-in speedometers for road use. The app is best used as a temporary solution or supplement while you get your speedometer repaired.
Common Broken Speedometer Problems
Car Speedometer Not Working
Common causes include:
- Faulty speed sensor
- Broken speedometer cable (older vehicles)
- Dashboard electrical issues
- ECU or instrument cluster failure
Repair Cost: $100-$400+ depending on the issue. Learn more about car speedometer features.
Motorcycle Speedometer Broken
Many motorcycles:
- Come without speedometers (dirt bikes, track bikes)
- Have unreliable mechanical speedometers
- Suffer from cable failures or sensor issues
- Need replacement after accidents or modifications
Repair Cost: $150-$600+ for OEM replacement. Check our motorcycle GPS speedometer.
Classic Car Inaccurate Speedometer
Older vehicles often have:
- Worn mechanical cables causing incorrect readings
- Gear ratio changes from engine swaps or tire size changes
- Aging components with 5-15% inaccuracy
- Expensive or unavailable replacement parts
Repair Cost: $200-$1000+ for restoration or conversion. Visit our classic car speedometer.
RV/Truck Speedometer Issues
Large vehicles face:
- Inaccuracy after tire size changes or modifications
- Complex dashboard removal for repairs
- Expensive dealership diagnostics ($100-$200+)
- Long repair times leaving vehicle unusable
Repair Cost: $300-$800+ for professional repair
Speedometer Repair Cost Breakdown
| Issue Type | Typical Repair Cost | Time Required |
|---|---|---|
| Speed Sensor Replacement | $100-$250 | 1-2 hours |
| Speedometer Cable (mechanical) | $120-$300 | 1-3 hours |
| Instrument Cluster Repair | $200-$500 | 2-4 hours |
| Instrument Cluster Replacement | $300-$800 | 2-5 hours |
| ECU/Computer Module Issue | $400-$1,200 | 3-8 hours |
| Classic Car Restoration | $500-$2,000+ | Days to weeks |
| GPS Speedometer App | FREE | 2 minutes |
Note: Repair costs vary by vehicle make, model, year, and location. Luxury and European vehicles typically cost 50-100% more. Labor rates range from $80-$150/hour depending on your area. Dealerships charge premium rates compared to independent mechanics.
Why GPS Speedometer is a Great Alternative
More Accurate Than Car Speedometers
GPS speedometers provide 1-2% accuracy, while car speedometers can be off by 2-10% due to tire wear, pressure, and calibration. GPS measures actual ground speed directly from satellites.
Saves Money
Speedometer repairs cost $100-$1000+. GPS Speedometer is free to download with essential features available at no cost. Use it as a temporary or permanent solution.
Works Immediately
No waiting for repair appointments or parts. Download, allow location access, and start tracking speed within minutes. No installation or vehicle modifications required.
Works Offline
Core GPS speed tracking works without internet. Once you have GPS signal, you can track speed anywhere - even in remote areas with no cell service.
Additional Features
Beyond just speed, get trip recording, distance tracking, altitude, max speed, average speed, and route history. Learn about advanced tracking features.
Speed Limit Alerts
Automatic road-based speed limit detection with customizable warnings. Stay aware of limits even without a working speedometer.
How to Use iPhone as Speedometer
Download GPS Speedometer
Free download from the App Store. Works on iPhone and iPad with GPS.
Allow Location Access
Grant "Always" or "While Using" location permission for GPS tracking to work.
Mount Your iPhone
Use a dashboard mount, vent mount, or windshield mount to position iPhone where you can see it safely while driving.
Wait for GPS Signal
Allow 1-2 minutes for initial GPS lock. Position with clear view of sky for best accuracy.
Start Driving
Speed will update in real-time. Optional: Use HUD mode to project speed onto windshield or enable speed limit alerts.
Pro Tips for Best Accuracy
Clear Sky View
Position iPhone with unobstructed view of sky. Avoid placing under metal dashboards or in glove box.
Keep Charged
GPS tracking uses battery. Use car charger for long trips or continuous use.
Enable Data Connection
While core speed tracking works offline, data connection helps with faster GPS lock and enables speed limit detection.
Wait for Accurate Reading
GPS accuracy improves after moving. Speed readings above 10 km/h are most accurate.
Safe Mounting
Ensure mount is secure and doesn't obstruct your view or airbags. Never hold phone while driving.
Use a Vibration-Damping Mount on Bikes & Scooters
Sustained high-frequency vibration from small two-stroke engines (motorcycles, mopeds, older scooters) can degrade the iPhone's optical image stabilization over time. If you're mounting on handlebars, use a vibration-damper accessory (Quad Lock Vibration Dampener, RAM Mount with cushioned ball) — not just a plain bar clamp.
Frequently Asked Questions
Yes. GPS speedometers provide 1-2% accuracy, which is often more accurate than car speedometers. Car speedometers can be off by 2-10% due to tire wear, pressure, and calibration drift. GPS measures actual ground speed directly from satellites.
Laws vary by jurisdiction. Some areas require functional built-in speedometers for road use. GPS Speedometer is best used as a temporary solution or supplement while you arrange proper repairs. Check your local vehicle equipment laws.
Yes. Core GPS speed tracking works completely offline once you have GPS satellite signal. Features like speed limit detection and weather require internet, but basic speed display, trip recording, and distance tracking work anywhere with GPS signal.
Absolutely. Many motorcyclists use GPS Speedometer on bikes without speedometers (dirt bikes, track bikes) or with broken gauges. Mount your iPhone on handlebars and track speed, distance, and trip data. Works great for both bicycles and motorcycles.
GPS Speedometer is free to download. Essential features (speed display, basic trip tracking) are free forever. Optional premium features (unlimited trip saving, advanced themes, speed limit alerts) require a subscription or one-time purchase.
GPS Speedometer works with any vehicle: cars, motorcycles, trucks, RVs, classic cars, boats, and even bicycles. It measures actual ground speed via GPS, so it's independent of vehicle type or speedometer mechanism.
Use a dashboard mount, vent mount, or windshield mount to position iPhone where you can glance at it safely. Ensure the mount is secure and doesn't obstruct your view, controls, or airbags. Never hold your phone while driving.
Yes, GPS tracking is battery-intensive. Use a car charger during trips for continuous use. When the app is in background without active trip recording, GPS usage stops automatically to conserve battery.
Related guides
Classic-car speedometer guide
Vintage gauges that quit decades ago — same GPS fix, chrome untouched.
RV speedometer guide
Older RV clusters fail too. Bonus: tire-size accuracy.
Motorcycle speedometer guide
Stock cluster dead? Same fix, on two wheels.
Scooter speedometer guide
Many scooters never had a working speedometer to begin with.
GPS vs analog accuracy
Why GPS reads truer than a worn mechanical cluster.
Tire-size speedometer calculator
Free tool that quantifies how much your speedometer is off after a tire change.
Speed-limit alerts
A bonus you couldn’t get from a stock dashboard repair.
Speed camera alerts
On the road again? Get warned about upcoming speed cameras across 40+ countries.
Ready to Replace Your Broken Speedometer?
Download GPS Speedometer and start tracking your speed accurately today.
5.9M+ downloads • 4.7★ rating • iOS 16.0+