My V8 mileage experience

kowalcs · Mar 7, 2005

We took a road trip this weekend in our V8 and I was amazed at the mileage. When we got on the Indiana turnpike, I reset the MPG reading and set the cruise for 67mph or so. After 50 miles of driving, our average MPG was 25.5. Very impressive.
Upon our next fill up, I reset the average MPG again. For the next 120 miles or so, while averaging between 75-80mph on the highway and some slower city driving, our V8 recorded a 21.7 average mpg. Compared to our previously owned T6, the mileage that we are getting on our V8 is significantly better. I am very impressed, to say the least. I just wanted to share our experiance with everyone. After owning both a T6 and V8, I can honestly say that the V8 gets better mileage in all conditions.

Modified by kowalcs at 6:49 AM 3-7-2005

KAOS1972 · Mar 7, 2005

Re: My V8 mileage experience (kowalcs)

For comparison.....I just got back from a 500 mile round trip in a brand new LR3 (friend's) and we had an avg speed of 78.8 mph and gas mileage of 11.2 mpg.......I am so glad I ordered the Volvo.......He hates his LR3 after only 3 weeks with it.

kowalcs · Mar 7, 2005

Re: My V8 mileage experience (KAOS1972)

11.2mpg! Wow, I bet I could beat that while towing my snowmobile trailer. Our old T6 averaged 13mpg towing our trailer between 70-75mph for 200 miles.

GrecianVolvo · Mar 7, 2005

Re: My V8 mileage experience (kowalcs)

Quote, originally posted by kowalcs »

We took a road trip this weekend in our V8 and I was amazed at the mileage. When we got on the Indiana turnpike, I reset the MPG reading and set the cruise for 67mph or so. After 50 miles of driving, our average MPG was 25.5. Very impressive.

After 327 miles, the computer on my demo has indicated that my average is 19.8 mpg, mainly city/suburban driving. So far, I am very pleased.

Yannis

bpwrightwv · Mar 10, 2005

Re: My V8 mileage experience (GrecianVolvo)

hello, S40 owner crashing your XC90 party. Just curious, anyone mathematically figure the mpg rather than allowing the computer to do it? I'm curious to know how close it is.

1sttimevolvo · Mar 10, 2005

Re: My V8 mileage experience (bpwrightwv)

Quote, originally posted by bpwrightwv »

hello, S40 owner crashing your XC90 party. Just curious, anyone mathematically figure the mpg rather than allowing the computer to do it? I'm curious to know how close it is.

Typically dead-on. I've never had a discrepancy when checking it with a calculator. Never more than a tenth difference - and as much as a tenth difference is a rare occurrence.

webpj · Mar 10, 2005

Re: My V8 mileage experience (bpwrightwv)

On our 2.5T the computer is a bit lower 2-5% in the extremes

spideyman · Mar 10, 2005

Re: My V8 mileage experience (webpj)

Quote, originally posted by webpj »

On our 2.5T the computer is a bit lower 2-5% in the extremes

Mine is about the same 2-5% lower when I calculate manually over several tank fillups.

XC-Ski · Mar 10, 2005

Re: My V8 mileage experience (webpj)

Quote, originally posted by webpj »

On our 2.5T the computer is a bit lower 2-5% in the extremes

About the same here. On individual tankfulls I have seen as much as 1.4 mpg difference (6.5%) but over a hundred tankfulls the readout is only 0.1 mpg lower than calculated (about 0.5%). Looking at all those visits to the station, I sure wish the car had a larger tank!

1sttimevolvo · Mar 10, 2005

Huh! Mine must be broked then.

webpj · Mar 11, 2005

Re: My V8 mileage experience (XC-Ski)

Quote, originally posted by XC-Ski »

I sure wish the car had a larger tank!

I agree, 23 Gallons would be near ideal

kowalcs · Mar 11, 2005

Re: My V8 mileage experience (webpj)

Quote, originally posted by webpj »

I agree, 23 Gallons would be near ideal

I was so happy to learn that our V8 has a bigger tank than our old T6. 21.1 gallons vs. 19 gallons.

need4spd · Mar 19, 2005

Re: My V8 mileage experience (kowalcs)

At 300 miles our V8 average fuel consumption has been 12.1MPG, we do mostly city driving with little Highway driving.

Our area is pretty congested and full of stop signs and traffic lights.

Our previous car, a 540i got around 13.5 average, so on par for the area.

kowalcs · Mar 19, 2005

Wow, you must do a lot of sitting. For the most part, we're averaging around 19mpg with mixed city and highway.

Legend · Mar 19, 2005

Re: (kowalcs)

Just curious,

What is the engine rpm at a steady 60 mph, and say 70 or 75 mph?

need4spd · Mar 20, 2005

Re: (kowalcs)

Quote, originally posted by kowalcs »

Wow, you must do a lot of sitting. For the most part, we're averaging around 19mpg with mixed city and highway.

I guess we do, just a lot of congestion, average speed is reported to be about 15mph.

We have tried to be as light footed as possible too.

That's why they say millage will vary

GrecianVolvo · Mar 20, 2005

Re: (Legend)

Quote, originally posted by Legend »

Just curious,

What is the engine rpm at a steady 60 mph, and say 70 or 75 mph?

At 70 mph, I am showing about 1650 to 1700 rpm. At 60 mph U have seen as low as 1300 to 1400 rpm.

Yannis

GrecianVolvo · Mar 20, 2005

Re: (kowalcs)

Quote, originally posted by kowalcs »

Wow, you must do a lot of sitting. For the most part, we're averaging around 19mpg with mixed city and highway.

Same here...some times even close to 20.

By the way, kowalcs, do you get a slight hesitation when you are slowing down and while the car is in 2nd gear (NOT 1st) and you hit the gas pedal?

Yannis

kowalcs · Mar 21, 2005

Re: (GrecianVolvo)

Quote, originally posted by GrecianVolvo »

Same here...some times even close to 20.

By the way, kowalcs, do you get a slight hesitation when you are slowing down and while the car is in 2nd gear (NOT 1st) and you hit the gas pedal?

Yannis

No, I haven't noticed that. My wife drives the vehicle 95% of the time. Lucky woman.

alella · Mar 21, 2005

Re: My V8 mileage experience (kowalcs)

Not to sound too unsafe or anything, but does anyone have any experience with mileage in the V8 at higher speeds? Our issue is the opposite of what others' here face - I pity the poster who averages on 15 mph to work. In our case, it is pretty much a straight shot on the superhighway from home to work, with normal cruising speeds in the 90 mph range (the one surprising bit of liberty left in Europe). Even going 75 mph on the morning drive you are a road hazard - the equivalent of a farm implement.

In the 2.5 we get only around 16-17 mpg on the highway because of the high cruising speed. Have any of you with a V8 (anyone from Montana out there?) tried setting the cruise on 90, or even 85, and noted what sort of mileage you get?

David

tonytong01 · Mar 21, 2005

Re: (GrecianVolvo)

Quote, originally posted by GrecianVolvo »

At 70 mph, I am showing about 1650 to 1700 rpm. At 60 mph U have seen as low as 1300 to 1400 rpm.

Yannis

Is that typical of what the RPM's should be at those speeds? Feels like it should be higher.

webpj · Mar 24, 2005

Re: My V8 mileage experience (kowalcs)

EPA estimates 14/20

GrecianVolvo · Mar 25, 2005

Re: (tonytong01)

Quote, originally posted by tonytong01 »

Is that typical of what the RPM's should be at those speeds? Feels like it should be higher.

Yes. The car has to be in 6th gear, though.

Yannis

need4spd · Apr 18, 2005

Re: My V8 mileage experience (need4spd)

Ok, just passing the 1k mark (yes, we put very few miles on), and fuel economy is 12.3 mpg.

Note, I would estimate 90% is city driving and our area is congested.

In my car, which is a V6 (vs the wifes V8) I get about 16mpg, so it is not too far off.

kowalcs · Apr 18, 2005

Re: My V8 mileage experience (need4spd)

Ouch. The lowest I've seen upon any of our fill-ups has been about 18.5mpg. Normal is right around 20mpg.

My V8 mileage experience

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