How accurate is the MPG gauge
#22
Registered User
Join Date: Sep 2002
Location: TennessZee
Posts: 1,293
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by robcassell
I was also thinking why it takes 30 seconds to update....bmw is instant and it has been like that well over 10 years
I was also thinking why it takes 30 seconds to update....bmw is instant and it has been like that well over 10 years
WayneTN
#23
New Member
Join Date: Oct 2002
Location: SF Bay Area, CA
Posts: 2,129
Likes: 0
Received 0 Likes
on
0 Posts
It's reasonably accurate. I've found that it's usually between 0 and 1 mpg off compared to what I get when I calculate it manually (distance traveled / gallons used). It's been off by as much as say 1.5 mpg for me, but that's unusual.
It's a lot better than my Maxima's trip computer which was usually normally at least 2-3 mpg too high.
It's a lot better than my Maxima's trip computer which was usually normally at least 2-3 mpg too high.
#24
Registered User
Join Date: Jul 2003
Location: Allen, TX
Posts: 3,407
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by WayneTN
It either averages the data over a 30-sec. period or takes a reading every 30-sec. Just the way they chose to do it. If BMW's is instant, looks like it would be changing like a digital tach and not mean very much.
WayneTN
It either averages the data over a 30-sec. period or takes a reading every 30-sec. Just the way they chose to do it. If BMW's is instant, looks like it would be changing like a digital tach and not mean very much.
WayneTN
#27
Registered User
Join Date: Mar 2004
Location: Scottsdale, AZ
Posts: 512
Likes: 0
Received 0 Likes
on
0 Posts
For your information,
Just got my tank filled this morning. My computer was reading that I had averaged 19.5 mpg since last fill.
I added 14.830 gallons after driving 289 miles. Divide that out and it equals 19.4875 mpg - how much more accurate could it be?
I might add - the gauge was not near riding on the empty line - so tank likely does hold 20 gallon.
This was all around-town driving - no on road, but some expressway. AND I DO HAVE FUN AT TIMES!! ( interpreted=zip it in 2nd and 3rd - between lights.
The car only has 1100+ plus miles on it - so dont doubt it will bet 25 on the road soon after some breaking in miles.
A fun car!!
Just got my tank filled this morning. My computer was reading that I had averaged 19.5 mpg since last fill.
I added 14.830 gallons after driving 289 miles. Divide that out and it equals 19.4875 mpg - how much more accurate could it be?
I might add - the gauge was not near riding on the empty line - so tank likely does hold 20 gallon.
This was all around-town driving - no on road, but some expressway. AND I DO HAVE FUN AT TIMES!! ( interpreted=zip it in 2nd and 3rd - between lights.
The car only has 1100+ plus miles on it - so dont doubt it will bet 25 on the road soon after some breaking in miles.
A fun car!!
Thread
Thread Starter
Forum
Replies
Last Post
Colombo
Forced Induction
35
11-09-2020 10:27 AM
bcoffee20
Zs & Gs For Sale
5
11-19-2015 06:39 PM