The Audi A7 Sportback isn’t exactly new. In fact, it first went on sale globally in 2010. But now Audi has added a beefier turbo-diesel to the line-up, complementing a 3.0-litre petrol version, two less powerful diesels and, of course, the range-topping, fire-breathing 4.0-litre V8 S7.
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And, as it turns out, this new bi-turbo powerplant — still in the familiar 3.0-litre V6 guise — is a bit of a technological wonder in itself. As the name suggests, it makes use of a pair of turbochargers to delivery oodles of oomph to all four wheels pretty much throughout the rev-range. A tiny turbocharger takes care of proceedings from idle to somewhere around 2500rpm, before a second, far larger turbo chimes in all the way through to the 5200rpm redline.
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