How big is our gas tank?

[rider384]

I always thought it was 18.1 us gal, but I recently managed to put in 18.5 at the pump.

How big are they?

[Dusty Mauve]

I´ve always thought that C5 had 70 liter? 70liter would be 18.5 gallons I believe.
You could always squeeze some extra in the piping though...

[awdjunkies]

It is indeed 18.5 US gal. for the '02 2.7T sedan

[_aegis_]

... I'm guessing the AR has a smaller tank, then?

[awdjunkies]

... I'm guessing the AR has a smaller tank, then?

You would think, but actually it's the same damn thing lol..

Think of it as a SUMO wrestler(C5 AR), having the same size stomach you and I have (C5 A6), So the sumo wrestler weighing more has to eat sooner/more often than we do LMAO!!!

[2.7taudi]

yea the narrow bodys are 18.5 and 4.2 is 21.7 or something.

[awdjunkies]

yea the narrow bodys are 18.5 and 4.2 is 21.7 or something.

Well, the 4.2 AR has the same 18.5Gal size tank.. but yeah the 4.2 A6 has a 21.7Gal. yeah they should have included that in the AR, no matter what engine it has..

[_aegis_]

Hm. I guess I also would think it's a smaller tank because I tend to fill-up before it hits the red tick-lines on the gas gauge (1/4 tank)... I know it won't kill me to go into them, but for some reason, it spooks me, hahaha.

[awdjunkies]

It's probably due to allroads sharing the same floorpan that underpins narrowbody C5s. The timing belt V8 widebodies sport a reworked floorpan that not only clears the larger fuel tank but the larger/wider 5HP24A transaxle as well, which neither the allroad 4.2 got.

Right, but they could have engineered a two bellied gas tank (One on each bank of the Avant), so that they could have gotten away with a bigger tank yet space savings enough to make it work.

[Scotty@Advanced]

i've gotten as much as 22 gallons filling the fuel neck in my 4.2 A6.

[2.7taudi]

Well, the 4.2 AR has the same 18.5Gal size tank.. but yeah the 4.2 A6 has a 21.7Gal. yeah they should have included that in the AR, no matter what engine it has..

But the allroad only came on the narrow body with larger fenders. But iirc the body is the same as narrow body. Width wise. This is why they had to use a smaller, different 4.2 o the AR.


Sent from my iPhone Quattro.

[MCargill12]

Ive gotten 19.2 in my c5 3.0's tank before, stock is rated 18.5 but I think theres about 2 gallons extra for reserve in many tanks.

[mithril]

Hm. I guess I also would think it's a smaller tank because I tend to fill-up before it hits the red tick-lines on the gas gauge (1/4 tank)... I know it won't kill me to go into them, but for some reason, it spooks me, hahaha.

I do that too, but only because pay-at-the-pumps limits transctions to $100 and anything more than 3/4 of a tank means having to put my card in twice (pet peeve). Might not be an issue with the smaller V6/AR tank, but it is with Canadian gas prices + the 82L tank in the 4.2L and S6.

[S-line A6]

I have had my A6 for 4 months now...have yet to top off the tank. $70 is my limit and that gets me about 270 miles. Only thing i mis about my RSX is the gas mileage.