Audi drops V6 surprise at Geneva Motor Show 2017

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At this year’s Geneva Motor Show, the German OEM has debuted its all-new V6 bi-turbo TFSI, which will power the new RS 5 Coupé.

The 2.9 TFSI bi-turbo unit produces 450ps and delivers 600Nm (442.5lb-ft) of torque, available across a wide band from 1,900 to 5,000 rpm, and is said to propel the RS 5 Coupé from 0 to 62mph in just 3.9 seconds. With the optional dynamic package, the unit is claimed to achieve a top speed of 174mph.

Two turbochargers are positioned centrally between the cylinder banks of the 2.9 TFSI unit. The ingested air flows to the respective turbocharger and into the combustion chambers through a dual-branch system for spontaneous response. The B-cycle combustion process with central direct injection provides a new level of efficiency in the RS models. The shortened compression stroke used here enables an engine process with a significantly higher geometric compression ratio. Combined with a power stroke that, while normal, is longer relative to the compression stroke, this enables more efficient combustion and increased engine efficiency.

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Dean has been with UKi Media & Events for over a decade, having previously cut his journalistic teeth writing and editing for various automotive and engineering titles. He combines extensive knowledge of all things automotive with a passion for driving, and experience testing countless new vehicles, engines and technologies around the world. As well as his role as editor-in-chief across a range of UKi's media titles, he is also co-chair of the judging panel of the International Engine of the Year Awards.

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