i did the math, and with a reasonable balance between highway and street, it gave me a solid 16.7mpg.... Now its that i just got off driving a 10.5mpg SUV that this is nice to me, but for an engine with 2 less cylinders, and 1/2 the displacement, should i expect a bit more?

Perhaps its an unecessary thing, but the first thing i did was swap in a K&n replacement panel filter, other than that i have no idea. So the question is coming from it, are there any small mechanical things (spark plugs, checking stuff) to be done to possibly up this a bit?


its got about 87,000 miles, 2000 s80 T6... '


thanks...

 

Give it a tune up, keep your foot out of it, and clean the mass air meter. I would probably return the K&N if it was me, those things are notorious for having excess oil on them that gets on the mass air meter and throws it out of whack.

 

Agreed with all of the above (although I do sport a K&N as well).
Also air up your tires (35psi or better); anything less and you're losing out.
Have the alignment checked regularly.
Fuel system cleaner once in awhile.
See if switching octane or brands of gas helps.

I have been trying to squeeze out as much as I can out of gas for months now. I have seen a BIG drop due to temperature and the gas formulation. With my S60 I was consistently getting 31-32 in city mode. Now I strain to get 27-28. If you are in a region that experiences 'winter' then justunderstand that you might be getting 10-15% lower mileage than in summer weather. If you tend to warm up the car for a few minutes, get stuck at traffic lights, tend to speed up/slow down, or drive fast ... it all contributes.

Your car was EPA rated at 17/25/20 city/hwy/combined. They might be unrealistic numbers. BUT, if you are like me (getting 15+ percent below summer mileage) then your true mpg is closer to 1.17*16.7= 19.6 which isn't so bad.

 

Yeah. I get about 16.7 MPG. I've cleaned TCM and such. Also put a cone filter in. You're not going to get amazing gasmileage out of it though due to the turbos and large sum of horsepower.

 

if I try Hard enough, I can average 19.4 mpg in my 01 s80 t6, and thats 14 miles highway and like 7-8 miles back roads.

but I just havent been trying for it and and averaging a 16.1, lol I blame that to my Turbo addiction in the car lmao

on a trip to new york from boston, my car can do25 mpg, all highway....

 

is the cone filter you put in shielded? if not you could just be sucking in heat...

By the way, i really dont see any record of the spark plugs being replaced in the last 60k mi... might that be a good idea?

 

Right now I'm getting around 22 (15 miles highway, 60MPH+ 5 miles city, 45MPH) on my 99 S80 T6. Almost every other weekend I drive 140miles on highway, then I get 24.7 - 25.0 MPG at 70 -80 MPH.

I use fuel system cleaner every 2000 miles. Gas - Chevron Premium. The Volvo dealer suggested me to use Chevron, coz' he said he noticed that it is better for the engine than Shell. Don't know about other brands. So I blindly switched to Chevron.

 

No, it's not shielded. Sorta - kinda. [:'(]