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Tag Archives: S4 TDI

Audi’s A4 diesel flagship is a cracker

Every time I drive a new car, I play a little game with myself. Would I swap it permanently for my much-loved 2008 5 Series? Normally, the answer is no. Of course my head gets turned by powerful engines and swoopy styling but once I bring the practicalities of comfort, convenience and running costs into the equation, it’s rare I find myself yearning for something new. But there’s always one… and that one is the new Audi S4 TDi. Yes, Audi’s A4 performance flagship is a diesel and it’s a cracker. Power comes from a 3.0 litre V6 but instead of the usual twin turbo arrangement, Audi have chosen to use a single, larger unit. Normally, that would be a recipe for lots of turbo lag and a lack of low down power and to solve this, an electrically driven compressor, or supercharger, squeezes the air at lower engine speeds. It’s an idea that occurred to me years ago. I …

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