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Discussion Starter · #1 ·
It feels like the speedometer is 2-4 mph faster than the actual speed of the car. I'd love it to be spot-on coz i want to push it to just below speeding-ticket velocities.

How accurate is our speedometer?
Has anyone tested theirs?
 

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Speedometer is almost always less accurate the faster you go.
My previous 2010 kia forte was 4mph faster.
In the VT, i'm almost positive its about 3-4 mph faster.
I usually tested this on the speed detectors catching me going 45mph when my speedometer read 49-51mph.
 

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My VT M/T has been pretty accurate when going through traffic speed detectors.

Now that you mention it, I will have a passenger do GPS speed tests and compare it to the speedometer the next chance I get.
 

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BTW, if you have the GPS navigation, you can compare the two speeds and it's always "less" for me.
 

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Oh yea, my bad.
I meant the blue max game.
Yes, on that I had also noted about a 3 mph difference, but I also don't know if the "analog" spedo is feed from the ECU or where. So I'm just gonna continue driving WELL above the speed limit and not worry about it :)
 

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It's probably a cable from the tranny like almost every other car.

The ECU can't know road speed even if it knows the revs and gear your in because you can be coasting in neutral. It could be a sensor on the tranny now.

It's probably calibrated for the standard Veloster wheels and the VT's wheels are a little bigger.
 

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It's probably calibrated for the standard Veloster wheels and the VT's wheels are a little bigger.
Thread hijack... sorry about that OP.

It would be interesting to see that speed wasn't calibrated, or compensation for wheel size given, for the car.
It just strikes me as odd that the "analog" spedo reads 50 but the bluemax "digital" spedo can offer a different speed. How?
 

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Mine is always 3-4 mph off. I drive past 2 speed detectors everyday. for some reason I always look hoping one day the VT will be accurate.
 

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this pisses me off. it started when i was cruising home from work late at nite and a civic went by me with that big digi speedo and it read the same as i thought i was going and he was passing me. my garmin, the navi, my phone, blue max all say 3-4mph faster. dealer said they cant change it and all my devices are inaccurate too. wth
 

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Ive checked mine against GPS and mine is high 1-3mph when under 50mph and high 3-5mph between 50-85mph. The speedos accuracy progressively get worse the faster I go. Its almost like the ECU was calibrated for a different wheel/tire combo.

Its irritating to me cause if the speedo is off then so is everything related. i.e.: mpg average, odometer reading, etc. Should be an issue fixed by Hyundai. With enough complaints logged they could do a TSB to fix it.
 

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When I was on the track my speedometer was reaching 105-110 (couldn't continuously look). Looking back at Torque Pro, my top speed was only 98. Can't vouch for the accuracy of either, but that was my experience, and really bummed me out to see that I didn't break triple digits.
 

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Ive checked mine against GPS and mine is high 1-3mph when under 50mph and high 3-5mph between 50-85mph. The speedos accuracy progressively get worse the faster I go. Its almost like the ECU was calibrated for a different wheel/tire combo.

Its irritating to me cause if the speedo is off then so is everything related. i.e.: mpg average, odometer reading, etc. Should be an issue fixed by Hyundai. With enough complaints logged they could do a TSB to fix it.
I wouldn't trust GPS speedo as far as I can throw my car. It's known that GPS measurements are off by as much as 100ft and its speedo is a guestimate based on how long to get from where you are to where it thinks you might be. Actually, if you know of any squad car police friends. See if they would be willing to clock you. Set your cruise at Xmph and have them clock you. They may or may not be able to print that out and take it to the dealer if they are off. I have a Garmin that I've used in 2 different work trucks and it always shows 2-3MPH slower then what the vehicle speedo says. The VT was no different.

In some ways, it's nice to be under a MPH or three. Gives me some leeway when I set my cruise control, especially when I go on base where if you spit out your window, security will pull you over for littering; and take a DNA sample to prove that it was your spittle on the ground! :haha:
 
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