Trip computer accuracy

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Compared to brin-to-brim calculation, the average efficiency reading on my 406's trip computer is:

Accurate to within 5mpg
5
36%
Consistently under-estimates by up to 10mpg
3
21%
Consistently under-estimates by up to 15mpg
1
7%
Consistently under-estimates by more than to 15mpg
0
No votes
Consistently over-estimates by up to 10mpg
0
No votes
Consistently over-estimates by up to 15mpg
1
7%
Consistently over-estimates by more than to 15mpg
0
No votes
Is inaccurate but not with no consistency
0
No votes
I don't have a trip computer in my 406 that measures efficiency
3
21%
I don't have a 406
1
7%
 
Total votes: 14

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rwb
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Trip computer accuracy

Post by rwb » Fri Apr 15, 2011 6:36 pm

How accurate is the efficiency reading on your 406's trip computer compared to what you work out by brim-to-brim filling?

Does it always under-estimate the truth? Or does it always over-estimate the truth? Or does it just do whatever takes its fancy?

R-plate 406 1.9 TD LX (1 year) | 02 406 2.0 HDi (90, Siemens) GLX+nav (8 years) | 07 407 2.2 HDi GT (since 2013) | 307cc 2.0 180 | Map of PeugeotForums users offering PP2k

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steve_earwig
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Re: Trip computer accuracy

Post by steve_earwig » Fri Apr 15, 2011 6:45 pm

None of the above :arrowu: I worked it out for quite a few tank fulls but it was always more-or-less right - sometimes over, sometimes under, but nothing worth worrying about.
Unskilled meddling sin©e 2007

2004 D9 2.0 HDi 110 Estate lhd VF38ERHZF81657352 - sold but being very well looked after.
1991 Yamaha TDM850 - fuel leaks galore!
2008 Toyota Recall4 2.0 VVTI ATM LHD JTMBH31V90D007261 - flimsy piece of crap.
1953 Matchless G3LS - It's alive!!

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rwb
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Re: Trip computer accuracy

Post by rwb » Fri Apr 15, 2011 6:56 pm

So that's "Accurate to within 5mpg" ?

R-plate 406 1.9 TD LX (1 year) | 02 406 2.0 HDi (90, Siemens) GLX+nav (8 years) | 07 407 2.2 HDi GT (since 2013) | 307cc 2.0 180 | Map of PeugeotForums users offering PP2k

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steve_earwig
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Re: Trip computer accuracy

Post by steve_earwig » Fri Apr 15, 2011 7:15 pm

Ooops, I didn't see that before :oops: More accurate to with a few tenths of a litre but I guess so.
Unskilled meddling sin©e 2007

2004 D9 2.0 HDi 110 Estate lhd VF38ERHZF81657352 - sold but being very well looked after.
1991 Yamaha TDM850 - fuel leaks galore!
2008 Toyota Recall4 2.0 VVTI ATM LHD JTMBH31V90D007261 - flimsy piece of crap.
1953 Matchless G3LS - It's alive!!

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rwb
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Re: Trip computer accuracy

Post by rwb » Fri Apr 15, 2011 7:19 pm

Wow!
I'm regularly 12mpg out.
Trust me to get the freak!

R-plate 406 1.9 TD LX (1 year) | 02 406 2.0 HDi (90, Siemens) GLX+nav (8 years) | 07 407 2.2 HDi GT (since 2013) | 307cc 2.0 180 | Map of PeugeotForums users offering PP2k

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