c5 automatic-specific mpg question
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You'll get slightly less mpg with the automatic (mainly due to the tranny gearing), but high 20's on the highway and 20-22 in town should not be unreasonable.
Le Mans Master
Joined: Dec 2001
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From: Winchester TN
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Hi blaCkvette6 -
I have a 2002 Z06 and a 99 A4 coupe with a 3:15 perf. axle ratio.
I consistently get 26~27mpg on the road with the coupe, compared to 28~29 in the Z.
In town, the difference is less pronounced - we get 17~18 in the coupe and 18~19 in the Z - but I do drive the Z a bit harder than I do the coupe in town.
best regards -
mqqn
I have a 2002 Z06 and a 99 A4 coupe with a 3:15 perf. axle ratio.
I consistently get 26~27mpg on the road with the coupe, compared to 28~29 in the Z.
In town, the difference is less pronounced - we get 17~18 in the coupe and 18~19 in the Z - but I do drive the Z a bit harder than I do the coupe in town.
best regards -
mqqn
Burning Brakes
Joined: Sep 2008
Posts: 875
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From: Los Angeles CA
Ill check my glove box to see what kind of gears i have. ill assume its the 2.73 because i do notice that it needs a little pedal push to get it going from a dead stop.
i also have 19s, so Im sure that hurts it by maybe 3mpg +/-
i also have 19s, so Im sure that hurts it by maybe 3mpg +/-
Thread Starter
Advanced
Joined: Aug 2008
Posts: 98
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From: Canyon Country CA
ok this is what i found out...
98 vert... auto.. 3.15 rear...
ive gotten 34mpg in the highway before going speed limit..
19mpg at best in the city going very easy on the pedal
but when i calculate my mpg at the next pump, the total is about 20mpg...but thats with more city driving than frwy.
if i can hit an avg of 25mpg total from each tank, I will be more than happy.
and btw, someone mentioned loosing 1-2mpg with headlights on.. thats so true lol
98 vert... auto.. 3.15 rear...
ive gotten 34mpg in the highway before going speed limit..
19mpg at best in the city going very easy on the pedal
but when i calculate my mpg at the next pump, the total is about 20mpg...but thats with more city driving than frwy.
if i can hit an avg of 25mpg total from each tank, I will be more than happy.
and btw, someone mentioned loosing 1-2mpg with headlights on.. thats so true lol
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Safety Car
Joined: Sep 2004
Posts: 4,815
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From: Port Orange Florida
130 mile trip last weekend 97 A4 Z51 got me upper 20's to about 30ish the whole way at about 78mph with AC.In town I seem to keep a steady low 20's.I follow the instant to make it relative and then do the math myself.
Burning Brakes
Joined: Sep 2006
Posts: 985
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From: Cumming Georgia
24-25mpg all around average. One third city, two thirds highway.
My four banger five speed '94 Ranger does slightly better at 25-26mpg average.
A4 - 2.73 gear - stock tune, reasonable driving around 65mph on highway.
My four banger five speed '94 Ranger does slightly better at 25-26mpg average.
A4 - 2.73 gear - stock tune, reasonable driving around 65mph on highway.
Last edited by TopFuelTim; Sep 25, 2008 at 06:37 AM. Reason: added stats for vette
Race Director
Joined: Oct 2004
Posts: 18,401
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From: Retired but working
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Have a 383 A4 with 3.15. All were checked by stopwatch on an oval 2.5 mile track where constant speed was maintained on cruise for 20 miles exactly. Temp was 82 degrees winds constant at 6 mph from the NE.
55 mph = 28.4 mpg
60 mph =29.2 mpg
65 = 29.3 mpg
70 = 32.9 mpg
75 = 29.6 mpg
80 = 28.8 mpg
85 = 27.4 mpg
90 = 26.8 mpg
100 = 24,7 mpg
120 = 21.2
72 = 33.4 mpg
Best over a 20 mile fairly flat run was at 72.
This was experiment with a brand new set of plugs, a good tune windows up, targa in place and cruise set by the DIC.
With Targa removed and windows rolled down MPG dropped approximately 1.7 mpg.
Was not tested at 90, 100 or 120.
55 mph = 28.4 mpg
60 mph =29.2 mpg
65 = 29.3 mpg
70 = 32.9 mpg
75 = 29.6 mpg
80 = 28.8 mpg
85 = 27.4 mpg
90 = 26.8 mpg
100 = 24,7 mpg
120 = 21.2
72 = 33.4 mpg
Best over a 20 mile fairly flat run was at 72.
This was experiment with a brand new set of plugs, a good tune windows up, targa in place and cruise set by the DIC.
With Targa removed and windows rolled down MPG dropped approximately 1.7 mpg.
Was not tested at 90, 100 or 120.
