Hi, I know its not much but when I set the cruise control, say to 70, the car mph according to the HUD and Dash display are 71. I know it's easily solved by setting the Cruise to 69 but it just seems a bit odd.
Any ideas?
Cruise Control speed setting 1 mph out.
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Same. I think it is just the odd way the design engineer programmed it. Doesn't make sense to a logical person thoHandy Andy wrote: ↑Fri May 11, 2018 1:48 pm Hi, I know its not much but when I set the cruise control, say to 70, the car mph according to the HUD and Dash display are 71. I know it's easily solved by setting the Cruise to 69 but it just seems a bit odd.
Any ideas?
2017 Mazda CX-3 sport nav 2WD Automatic 120 petrol in white
Mine is spot on, but that's in kmh and not mph.
Just for a test, how about changing to kmh (metric) and see if it's still different?
I belieive you (in The UK) can change from mph to kmh via a dial on the dash, correct ?
Just for a test, how about changing to kmh (metric) and see if it's still different?
I belieive you (in The UK) can change from mph to kmh via a dial on the dash, correct ?
Mazda CX-30 2.0 150HP Aut. Cosmo w. Tech Pack in Arctic White, 2023.
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Does it really matter? The Dash display and HUD aren't the correct speed anyway. They have to show a higher speed than you are actually doing. A sat nav that shows the speed is far more accurate (unless you are going up or down a very steep hill.
2019 CX-3 2.0 Sport Nav+ Automatic in ETERNAL BLUE
2015 MX-5 2.0 Sport Nav Manual in SOUL RED
2015 MX-5 2.0 Sport Nav Manual in SOUL RED
The speed showed in my car in The Netherlands is less than 1% to high which is (in my opinion) very accurate for a car.Strangways wrote: ↑Fri May 11, 2018 7:21 pm Does it really matter? The Dash display and HUD aren't the correct speed anyway. They have to show a higher speed than you are actually doing. A sat nav that shows the speed is far more accurate (unless you are going up or down a very steep hill.
I checked it for different speeds with a mobile GPS receiver known to be very accurate.
By the way: the speed set (in km/h) for the cruise control is the same as on the dashboard and the HUD.
Last edited by hsdejong on Fri May 18, 2018 9:23 am, edited 1 time in total.
- Mazda CX-5 2023 Exclusive-Line (Black Comfort Pack) Petrol FWD Manual Soul Red Crystal Metallic
Are You sure about that?
I had a 3 loaner car last year, with the new flip-up HUD, that didn't have an SD-card but the HUD worked fine, showing the exact same kmh as the speedo.
Mazda CX-30 2.0 150HP Aut. Cosmo w. Tech Pack in Arctic White, 2023.
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I believe anchorman is correct that the speed sensors are on the wheels and the HUD is is driven by the GPS. Maybe the new HUD no longer requires the SD card to be installed. The difference in readings is probably due to the variation in tyre circumference which will be affected by tyre wear and tyre pressure.
2019 CX-3 2.0 Sport Nav+ Automatic in ETERNAL BLUE
2015 MX-5 2.0 Sport Nav Manual in SOUL RED
2015 MX-5 2.0 Sport Nav Manual in SOUL RED