Audi has more models and engine choices than that Baskin Robbins has ice cream colours and flavours. There’s also the fact that one-quarter of Audi’s range is diesel and even here there’s a choice of five engines ranging from a 1.9-litre sipper to a 4.2-litre stonker. So it’s odd that Audi introduces a 2.7-litre engine to separate its 2-litre and 3-litre diesels. Why bother? Because it’s not just about the size.
Drivetrain and economy
The 2.7 is Audi’s latest turbo-diesel. Like the 3-litre, it’s a V6 but adds low-friction engine components and low-drag steering and oil pumps. Audi claims fuel savings of up to 15 per cent and rates the 2.7-litre turbo-diesel in the A6 at 6.4 litres/100km — pretty good for a big saloon even though this city-bound test recorded a more modest 8.2 l/100km.