What's the worse factory calibrated speedo you've come across?

[OzJavelin]

For me it's consistently been Mitsubishi's .. any of them.
Rentals, work fleet cars, my mothers Lancer, my wifes Triton .. all of them have been way, way out.
For example, my wifes Triton as best I can tell, you need to be doing at least 118km/h on the speedo to be anywhere near a real 110km/h road speed.
All the Falcons / Commodores I'd driven (stock) have always been almost dead-on accurate for speed.
Seems to be getting worse with newer vehicles.
I'm assuming people see inconsistencies between speedo's and built-in GPS systems?

[Giant Cranium]

All my falcons have been perfect. My liberty GT (the real GT) is also 8kmh our at 110

[Tonz]

If they are accurate then something is wrong. I am sure that federal government legislation is that all vehicles must read under the actual speed.
I set my Fg ute on 113 by speedo and GPS 110 south Australia

[Pedro]

Originally Posted by Tonz

If they are accurate then something is wrong. I am sure that federal government legislation is that all vehicles must read under the actual speed.
I set my Fg ute on 113 by speedo and GPS 110 south Australia

Last time I read anything about that it was "accuracy must be within 10%".

All my recent Falcons BF 1 - 2011 FG ute have been + 2 kms.

[naddis01]

My wife's Astra VXR is around 8-10km/hr out at 100.

[Gothefalcon]

My first car was a Morris 1100... the only time you could read a constant speed was 90Mph going flat out down hill (a very long and steep hill ) and about 1 or 2 minutes after you came to a stop (after the needle stopped spasm-ing )

Other than that... it would constantly jump back and forth about 10 - 15Mph... so you just had to go on average speed (the average of the min/max shown by the needle at any given point )

D

[GO FURTHER]

Yep, my wife's Mitsubishi ASX is way out when we take her car somewhere and I plug in my accurate Garmin GPS by a good 8Km/hr out at 100.

Having said that my new 2017 Mustang is also a fair way out by at least 5km/hr under even at 60km/hr.

The best was the FG MKII XR6T at only 1 - 2km/hr under.

[ronwest]

My first car was consistently out.


Speedo went up to 80mph but seemed to always read "ignition light mph".

[gossy]

Isuzu NPR Trucks, at least 12% out and increases as the speed does.

[Bushbasher]

Every ford I've ever owned has been out by a consistent 5kph. My wifes' BF wagon 115 = 110kph. The AU work hack is the same, 115@110kph. My Fairlane is a bit more because I run 235/45 tyres instead of the factory 225/50 series.

[mick taylor]

The Wife's Totota Aurion must be out 8km/h at 100 km/h right from new, all std tyres and all.

[ozpacman]

Originally Posted by mick taylor

The Wife's Totota Aurion must be out 8km/h at 100 km/h right from new, all std tyres and all.

You're spot on there Mick. All our work cars run a second corrected speedometer and the Camrys and Aurions were always pretty optimistic. Factory speedo indicated speed of 100 kph when corrected speed was always about 92.

Falcons were generally up around 98 and the Commodores not far off that.

Russ.

[roddy1960]

I only compared my GPS and speedo the other day actually . When my digital speed was showing spot on 100 the GPS was telling me 97-98 for my 2008 FG XR6 .. The AU is about 5 kays optimistic and the little Honda Accord I also have is about 6-7 out at 100 I reckon.

My dear old Dad had a Zephyr Mk2 when I was a kid and that speedo jumped around all over the place ., The speed we were travelling at was anyone's guess. All you knew was that you were at somewhere between 20-30 , 30-40 , 40-50 etc miles per hour .

[4stanger]

I agree with the OP. I have had the wife's 2008 Outlander & her current 2016 ASX, both were considerably out at 100km/h or 110km/h when compared to the GPS.

A couple of years ago, I was cruising my son's FG at 125km/h south of Taroom (Qld.) on the Leichardt Hwy. in the distance coming around the corner I could make out a motorcycle rider with a white helmet, Brain tells this is not correct braked straight away, it was a police motorcycle officer and he clocked me at 111 km/h, 1 point off my license (me thinks that will do ).

Many many years ago, my first car was a 1974 LH torana, 173ci 3 on the tree (ex Orange city council car, don't ask how the hell it end up in CQ), this thing would bend the needle all the way around to the odometer at the base of the speedo, the max. speed showing on the speedo was 160Km/h, Me being a person who prefers FORDS (the torana purchase is a very long story) , never wanted to believe this, so I arranged 2 mates (one an R/T Charger, the other VB Commodore) to follow me and I would put the indicators on left to right when I hit this speed, Both told me I was doing about 84 mph (Charger) 135 km/h (VB Commodore), needless to say both overtook me after this , there used to urban myth about torana owners spuiking about how much top speed they had, how can you prove them wrong though, they had seen it on their speedo!!!

[mick taylor]

Originally Posted by 4stanger

I agree with the OP. I have had the wife's 2008 Outlander & her current 2016 ASX, both were considerably out at 100km/h or 110km/h when compared to the GPS.

A couple of years ago, I was cruising my son's FG at 125km/h south of Taroom (Qld.) on the Leichardt Hwy. in the distance coming around the corner I could make out a motorcycle rider with a white helmet, Brain tells this is not correct braked straight away, it was a police motorcycle officer and he clocked me at 111 km/h, 1 point off my license (me thinks that will do ).

Many many years ago, my first car was a 1974 LH torana, 173ci 3 on the tree (ex Orange city council car, don't ask how the hell it end up in CQ), this thing would bend the needle all the way around to the odometer at the base of the speedo, the max. speed showing on the speedo was 160Km/h, Me being a person who prefers FORDS (the torana purchase is a very long story) , never wanted to believe this, so I arranged 2 mates (one an R/T Charger, the other VB Commodore) to follow me and I would put the indicators on left to right when I hit this speed, Both told me I was doing about 84 mph (Charger) 135 km/h (VB Commodore), needless to say both overtook me after this , there used to urban myth about torana owners spuiking about how much top speed they had, how can you prove them wrong though, they had seen it on their speedo!!!

I remember a Mazda RX 5 that was flat out beside me one my ZX10 Ninja, I could see his speedo reading 200KM/H and mine was showing 180km/h, maybe they thought they were giving me a run for my money but I went back 3 gears and cruse on 240KM/H like it was nothing.

Maybe your Torana had the wrong speedo gear drive put in the gearbox.
I found that the worst speedos were XY Falcons when doing 90mph and over the needle would bounce up and down when you hit bumps on the road and the HK Holden you got the same type of crap.

[Mercury Bullet]

S80, 110 indicated 116 actual.

[pottery beige]

B Series cruise set on 200 is bang on 200

po po verified....

[4stanger]

Originally Posted by mick taylor

Maybe your Torana had the wrong speedo gear drive put in the gearbox.

Yeah/Nah.
Could have a speedo issue, but it did read near enough correct speed under 100km/h, I did get done by the police radar in a built up area, doing 70 in a 60 and that was about what the speedo was reading at the time.

https://fordforums.com.au/showpost.p...6&postcount=31

Wheels magazine test back in 1977, was where I realized the toranas had a speedo issue in the higher speed regions, not just mine ; http://planetsoarer.com/ford/fast/page7.jpg

[mick taylor]

Originally Posted by 4stanger

Yeah/Nah.
Could have a speedo issue, but it did read near enough correct speed under 100km/h, I did get done by the police radar in a built up area, doing 70 in a 60 and that was about what the speedo was reading at the time.

https://fordforums.com.au/showpost.p...6&postcount=31

Wheels magazine test back in 1977, was where I realized the toranas had a speedo issue in the higher speed regions, not just mine ; http://planetsoarer.com/ford/fast/page7.jpg

My SL/R5000 speedo was just as spot on as my HX Sandman both had 3.08 diff and 14in wheels and both valve bounced at 200KM/H with the stock engines.

If the Torana is running 13in wheels and 3.08 diff maybe it's to do with the selection of the speedo gear that in the gearbox, mine was a green one I believe.
Maybe they were putting in a 2.78 ratio speedo gear with 13in wheels with 3.08 diff, a white speedo gear I think 2.78 was.

Sure some speedos may of been wonky ones but I can not see why they would of been as the speedo would be just the same setup Torana or the big Holden, behind the face that you see.
All the LH-X Torana's my mates had speedos were fine at reading and they were driving flat out on the highway a lot of the time.

If you work out the % difference between 3.55, 3.36 3.08, 2.78, 2.60 and then look at the wheel and tyres differences 13in to 14in, well I am sure Holden just tossed in what ever will do, as such was no real big deal back in the days. you had a red and a pink and a green a blue a white speedo gears that i can remember that I have seen for the Aussie box.

[mick taylor]

Originally Posted by 4stanger

Yeah/Nah.
Could have a speedo issue, but it did read near enough correct speed under 100km/h, I did get done by the police radar in a built up area, doing 70 in a 60 and that was about what the speedo was reading at the time.

https://fordforums.com.au/showpost.p...6&postcount=31

Wheels magazine test back in 1977, was where I realized the toranas had a speedo issue in the higher speed regions, not just mine ; http://planetsoarer.com/ford/fast/page7.jpg

Holden's with stock 253 or 308 with 3.36 diff and 14in wheels could only do about 180KM/H flat out as the stock valve springs just went into valve bounce around 5000RPM and the 308 V8 with a 3.08 ratio diff could do 200KM/H with 14in wheels.

The Torana with 13in wheels and 2.78 diff is much the same gearing as it is with a 3.08 ratio and 14in wheels.

I have that old wheels test mag still, i bought that mag when it came out.

When i got my SL/R5000 it was around 1989 and it had 14in wheels put on it and a LSD 3.08 diff and she hit 5000rpm at 200KM/H because of valve bounce and the same was true with my Sandman with a 3.08 diff, so the speedos and tacho must of been not that bad.

You could rev them stock engines out to 5500rpm but in top gear i would say that with the time span at high revs the springs start to get a shimmy by then and they lose some more tension then, so they can not hold 5500rpm for long.

[flightstrike]

My old '04 BA was over reading by about 5kmph. My '10 FG over reads by 1kmph.

[davenl5l]

Every car I'm stuck behind on sa country roads

[burnz]

Originally Posted by davenl5l

Every car I'm stuck behind on sa country roads

only on a single lane road, different story on a duel lane road..

[davenl5l]

Originally Posted by burnz

only on a single lane road, different story on a duel lane road..

No because most of them drive in the fast lane

[burnz]

Originally Posted by davenl5l

No because most of them drive in the fast lane

exactly, the speedo don't work in the right lane..
drive faster..

[simon varley]

both Suzuki m/bikes run 10% over which is the max allowed by law (at indicated 100 I'm doing 90 because I'd never confirm that an indicated 110 is an actual 100 )

[Ben73]

Mitsubishi is pretty bad. The work 2016 Pajeros were out by at least 8km/h at 110km/h.
But we just got new 2018 ones that are only out by 2 or 3 at 110km/h.

Fixed the speedo's but everything else about them is still garbage for 2018 standards.

[xr8territory]

We had a Grand Voyager. Speed was 100% correct with the GPS.
My 2009 Fiesta when set at just over 111kmph on the speedo , is 100kmh on GPS.
122 is 110 on GPS.

[Tassie f100]

The old Pregio was about 8 kmh out at 100,Ranger about 5 at 100,Wifeys Hyundai I30 is almost spot on at 100

[Ben73]

A mate had a VN commy. According to him the speedo was showing about 110 when he was Sitting side by side with me while I was driving a near new car showing a bit over 90. I GPS tested that car and it was only out by a couple of km at that speed. After realising this my mate said "no wonder everyone always overtakes me"
That car was a shot box so no wonder it was out by so much.