"The next generation of the S6 could get a diesel," said Kirstin Englhardt, project manager for the new Audi S6.
Audi is currently launching its S6 sedan with a 5.2-liter, V-10 gasoline engine which is capable of producing 435 hp. The engine is based on the Lamborghini Gallardo engine and is also used in the upper-premium Audi S8.
Audi will install a naturally aspirated V-8 engine in the lower-premium S4. Like most of the previous S models, its predecessor was turbocharged.
A turbocharged engine will be used in the next entry-premium S3. The S3, which goes into production in mid-September, will receive a 2.0-liter engine capable of 265 hp. That engine was chosen in place of a naturally aspirated V-6.
The S6 will be offered exclusively with an automatic transmission. Competitor BMW developed a manual shift version for its M model after pressure from U.S. customers.
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