Audi has added start-stop technology to its automatic transmission cars. Normally other than in a hybrid paired to some kind of CVT or e-CVT, auto start-stop systems have traditionally only been available with manuals, as they are so far with cars from manufacturers like BMW.
It’s abit of a grey area here as the A3’s auto start-stop system is technically not mated to an automatic transmission in the traditional sense. It’s not a proper slushbox but is instead an S-Tronic (DSG) twin clutch transmission, which is sort of like a manual but with two computer controlled clutches.
The auto start-stop system helps the 105 horsepower 1.6 litre TDI engine deliver a fuel consumption of just 4.2 litres per 100km. With the 1.4 TSI with 125 horsepower, consumption is rated at just 5.3 litres per 100km.
These figures also include a brake energy recovery system that is used to assist the alternator. Mind you, these are real figures on a combined driving cycle, not some highway-only kind of mileage! Impressive stuff!