S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

other than driving style, what could cause a sudden drop in mpg? i was gettin about 220 /tank..now

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Old 12-24-2002, 03:20 PM
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Default other than driving style, what could cause a sudden drop in mpg? i was gettin about 220 /tank..now

170 or so.???
Old 12-24-2002, 03:37 PM
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Default Re: other than driving style, what could cause a sudden drop in mpg? i was gettin about 220 /tank..n

Most influential indeed: driving style. Other: motor oil. Fuel. Tires. Outside temperature. Length of trips. Load/aerodynamic drag (roof racks???). Automatic versus stick shift. Tire pressure or inflation. 220 miles per tank appears high to start with. My 50k miles experience on my S4: best ever was 480 miles per tank, steady 80 mph, engine hot/outside warm. Worst ever: track day, 150 miles on a tank. 170 miles a tank would trigger a thorough check if it were my car.
Old 12-24-2002, 03:57 PM
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Default Oh yeah ? beat this...

run up and down test the car, got a little more then 100 miles out of full tank. Friend think I have a V-10 or some big V-8
Old 12-24-2002, 05:07 PM
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480!!!!! WOW thats a lot! 220 is reasonable coupled with city driving, and traffic.
Old 12-24-2002, 07:17 PM
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Default 220 is definitely not reasonable, I get at least 300 at worst and that is with DC traffic. You must

be a lead foot or something. Or maybe it's the tip? ;-) Merry Christmas dood.
Old 12-25-2002, 02:35 AM
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Default Bad gas, low tire pressure..

Even things like a dragging brake caliper..which you would likely notice while driving.
Old 12-25-2002, 10:34 AM
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Default Re: 480!!!!! WOW thats a lot! 220 is reasonable coupled with city driving, and traffic.

480 miles was on one occasion: through Death Valley in January 2000, constant 80 mph because of a State Trooper following me for more than 300 out of those. No AC on, because it was cool enough. Synthetic oil (Mobil 1 15W50), 38 PSI all around. Worst was the track day, 150 miles on the tank. Average with long trips is around 280 to 320 miles on a tank, with city driving around 240 miles on a tank.
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