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9-5 Fuel Mileage??

1K views 11 replies 7 participants last post by  StX221 
#1 · (Edited)
Good Morning:

I'm looking at a 2002-2003 9-5 Aero. What fuel mileage are you garnering on the highway (I drive around 80MPH) and in the city? With gas possibly headed to $4 per gallon, the V8 in my current car looks very thirsty.

Any thing I should look out for on this model 9-5 Aero?

Thanks for the help!

Mark "Feff" Pfeffer
 
#4 ·
30-32 mpg at 80 mph is pretty optimistic. My 2000 9-5 Aero does about 29 mph at 75.

City driving - I have a lot of stop and go, short trip driving (cold cars use more gas), so my city mileage is not very good, 18 mpg or so. 21-22 is probably likely for more typical city driving.
 
#5 ·
I get around 24 MPG myself on the highway, though I travel over a lot of hilly terrain (3% grades for many miles) so that reduces my mileage fairly significantly. city mileage is around 19-21.

Also note that when my 9-5 is doing an indicated "80", it's actually doing 75. I usually cruise at an indicated 90 MPH which is around 84 mph. (GPS verified)

I have found that if I am driving very conservatively (75ish or less) and going over flat ground, 30-32 could be achieved but this is not a realistic MPG figure.
 
#11 ·
I get 24-29mpg city depending on how aggressively I drive and how much traffic there is. Highway at 70mph will net about 35mpg, and at 85mph (my usual speed) I get about 30-32mpg. This is on my brand new fuel system (new tank, filter, pump), new spark plugs, tuned ECU, etc.
 
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