Fuel capacity FWD and quattro

Attentive brochure readers may have already noticed that the quattro versions of the Audi TT have a larger fuel tank than the front-wheel drive (FWD) models. At first glance, you would expect the opposite to be true, because the Haldex four-wheel drive system takes up space under the car. However, the opposite is true — the quattro does not have a smaller tank capacity, but a larger one of 62 litres instead of 55 litres. Whether you drive the 180 hp quattro, the 225 hp variant or even the 3.2 V6, they are all equipped with this larger fuel tank. A nice detail that gives the quattro models that little bit extra — literally and figuratively.

Specifications Audi TT 8N Roadster 1999 (fuel capacity Coupé is identical)

Specifications Audi TT MK1 Roadster 1999

Differences in fuel tank construction
It is interesting to take a closer look at the two different fuel tanks in the Audi TT and see what lies behind the Audi TT 8N's stunning fuel filler flap.

The images above clearly show that the quattro tank on the driver's side has extra volume. At the same time, a raised section has been added to make room for the Haldex four-wheel drive system. In other words, some capacity has been lost on one side, but gained on the other — a clever piece of design work by Audi.

Thanks to this clever layout, the range of the 180 hp front-wheel drive TT Roadster and the TT quattro 1.8T has remained virtually identical. According to the factory data for the 1999 Roadster, you can achieve a maximum of around 670 km (8.2 l/100 km) for the front-wheel drive model and 660 km (9.4 l/100 km) for the quattro model with average consumption. But to be fair, to achieve that, you have to drive very economically — and running the tank completely empty is obviously not recommended.