2018 Speedo Not Calibrated?
- Thread starter LAMike240
- Start date
mazdadude
ZOOOOOOOOOM ZOOOOOOOOOM
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- '16.5 Mazda CX-5 Touring
It is not an issue, just an acceptable and slight difference between the two instruments.
But for arguments sake, let us assume that the speed on WAZE is 100% accurate... After driving with WAZE for 160,000 miles, your odometer will say 164,000 miles.
Federal standards are within 10% error acceptable at 55mph, and Australian looks to be the same, 10% error acceptable at 100kph.
But for arguments sake, let us assume that the speed on WAZE is 100% accurate... After driving with WAZE for 160,000 miles, your odometer will say 164,000 miles.
Federal standards are within 10% error acceptable at 55mph, and Australian looks to be the same, 10% error acceptable at 100kph.
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- State of Jefferson
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- 2017 CX-5 GT AWD+
Historically, speedos have typically indicated about 2 mph above the actual speed. But not in my CX-5. The HUD almost always agrees with those roadside "your speed" radar displays, never more than 1 mph off, which would be the level of precision of both indicators. The analog speedo, however, runs about 1-2 mph higher than the HUD.
I always imagined that the good old car companies were trying to help us avoid speeding tickets- lol.
I always imagined that the good old car companies were trying to help us avoid speeding tickets- lol.
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- State of Jefferson
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- 2017 CX-5 GT AWD+
That's why cops won't stop you for speeding <5 mph over the limit at highway speeds.
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- Plano, Texas, USA
Once I got a speeding ticket for driving at 56 mph on I-80 in Iowa! At the time the speed limit was 55 mph nationwide.
Don't worry. Pretty much all speedos are slightly off.
Been this way since year dot.
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- State of Jefferson
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- 2017 CX-5 GT AWD+
Coulda fought that one and won. I bet you had out of state plates!
GPS, maps and traffic app
The margin here used to be about 5km/h before a police officer would pull one over. No it's as little as 1-2km/h.
Since most speedos show under what the vehicle is doing, one shouldn't get pulled over if doing exactly the speed limit or 1 over.
Pretty much all the manufacturers set the speedo to read a little fast so as to compensate for tire diameter variations and other factors. They'd rather you'd be driving slower than you think rather than faster - maybe liability reasons?
