MY07 speedo inaccuracy

by **OzSTi** » Thu Oct 11, 2007 9:36 pm

I've long suspected my speedo over reads but just this week I've had the opportunity to check my speedo against a GPS.

Assuming GPS is accurate (can anyone comment?), at an indicated 60km/h, the GPS says I'm doing 53km/h.

This corelates with my subjective observations and shows it is more than 10% out.

Has anyone else got the same problem?

by **viriix** » Thu Oct 11, 2007 9:59 pm

Yep!!!!

If i'm at 80km/h on speedo, i'm doing about 73km/h on gps
If i'm at 90km/h on speedo, im doing about 81km/h on gps

110km/h on speedo shows as 100km/h on gps

I think my reading is very similar to yours for 60km/h on speedo as well..

by **gt_dicko** » Thu Oct 11, 2007 10:03 pm

Pretty common for the libs to read under...
http://forum.liberty.asn.au/viewtopic.php?t=564

by **OzSTi** » Thu Oct 11, 2007 10:47 pm

viriix wrote:Yep!!!!

If i'm at 80km/h on speedo, i'm doing about 73km/h on gps
If i'm at 90km/h on speedo, im doing about 81km/h on gps

110km/h on speedo shows as 100km/h on gps

I think my reading is very similar to yours for 60km/h on speedo as well..

Is this the Subaru optional GPS?

I'm going to speak to Subaru and consider this a warrantee issue. My previous two Subies were fine and out current Kluger is spot on and I think a greater than 10% discrepancy is unacceptable.

by **MY07GT** » Fri Oct 12, 2007 12:53 am

Yeah i always thought so cuz everytime i slow down for a camera and do the exact speed limit, i wonder why people are still passing me when im doing the exact limit?

Let us know how you go Oz.

Phil.

by **tangcla** » Fri Oct 12, 2007 7:40 am

MY07GT wrote:Yeah i always thought so cuz everytime i slow down for a camera and do the exact speed limit, i wonder why people are still passing me when im doing the exact limit?

Your car is just slow... literally

It's common for cars to read under the speed limit. There's a 10% manufacturer's tolerance.

by **viriix** » Fri Oct 12, 2007 7:51 am

OzSTi wrote:Is this the Subaru optional GPS?

No, I use a TomTom Go710! and I've also had a RoadAngel earlier..

I know there are innacuracies.. and then I also know the speed cameras in NSW allow for more.. discrepencies lol..

So.. you'd really have to be going fast to get a ticket.. which.. well isn't hard :p

The Liberty has a greater variance than any car i've driven and tested with a GPS of some sort.

My Honda Euro was roughly 3-5km/h out and the later Holdens were pretty spot on the dot!

Let us know what Subie says about it...

by **EJ25** » Fri Oct 12, 2007 9:52 am

no matter how inaccurate they are, im still going 89k's through a 90 fixed speed camera.. my license is my life.lol

by **sinist4** » Fri Oct 12, 2007 9:55 am

EJ25D wrote:no matter how inaccurate they are, im still going 89k's through a 90 fixed speed camera.. my license is my life.lol

yeah ive kinda noticed wen im doing 60 km/h it feels so slow compared to the other cars. i suspected the speedo was kinda faulty. :evil:

by **sleepergtb** » Fri Oct 12, 2007 2:49 pm

You will notice that the test on the new WRX is the same. Approx 93 km/h at 100km/h

by **Resonate** » Fri Oct 12, 2007 3:33 pm

EJ25D wrote:yeah ive kinda noticed wen im doing 60 km/h it feels so slow compared to the other cars. i suspected the speedo was kinda faulty.

Haha yeah same here! The other day i was going down this stretch of road hitting 60km/h exactly on my speedo because there was a cop next to me and all the cars in front were speeding off into the distance and i started laughing thinking at least one will get pulled over, but instead even the cop flew off.

by **Boxer** » Fri Oct 12, 2007 10:50 pm

Yep tested mine when I first got it as I suspected the same - felt slower than the speedo indicated. My GPS (Garmin ETrex Legend handheld) revealed around 10% inaccuracy

by **Bobolicious** » Sat Oct 13, 2007 8:20 am

Yep, mines the same.
I've got 17" wheels on mine, I thought some of you guys with 18's would be closer??
Looks like I may have to go for 20's to fix it up!!!

MY07 speedo inaccuracy

MY07 speedo inaccuracy

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