Squint and you might see it.

Audi has been spied screening a really ordinary-hunting S6 sedan prototype on some wintery roads.

The only giveaway that one thing is awry with this motor vehicle is the massive apparatus at the the rear. It appears this bulky tools is transforming the locale of the exhausts from the outside the house to far more centrally-mounted models.

The regular quad exhaust strategies have been blanked out with patches and there are now only two centrally-mounted exhaust recommendations. This is quite odd as Audi ‘S’ automobiles normally have quad exhaust ideas.

Our spy photographers noted the Audi S6 prototype was “very loud but did not search that different”.

Every little thing else about this prototype looks to be really comparable externally to the current design. We do not get a appear inside of while.

It is unclear what Audi is tests out just with this automobile but it clearly has a thing to do with the exhaust system.

One particular particular selection that Audi could be investigating is beefing up the outputs of the S6’s twin-turbo powertrain. This would solution why this prototype apparently created so substantially sound.

In Australia, the current-technology Audi S6 is only readily available with the 2.9-litre twin-turbo V6 engine with a 48V moderate-hybrid that produces 331kW of ability and 600Nm of torque. It’s mated to an 8-pace torque-converter computerized transmission.

A version of this engine, sans the 48V mild-hybrid method, is also utilized in the Porsche Panamera, Cayenne and Macan.

In European markets, there is also a 3.-litre twin-turbo V6 diesel offered that produces 253kW and 700Nm and is mated to a 7-pace twin-clutch transmission.

It’s unclear whether its a twin-turbo petrol or twin-turbo diesel engine in this individual S6 prototype.

A further probable choice Audi could be operating on is lessening the emissions of the twin-turbo powertrain. This would make sense for why there are significant boxy types beneath where by the exhausts ordinarily are.

Audi has previously mentioned it’s going all-electrical in all marketplaces, apart from for China, by 2033. It’ll also launch its last new world wide model with internal combustions engines (ICE) in 2025.

The European Union is also looking to ban petrol, diesel and hybrid new vehicles from 2035.

The European Fee is proposing a 55 for every cent cut for new vehicle CO2 emissions by 2030, and a 100 per cent cut by 2035. Recent targets only simply call for a 35 for every cent reduction by 2030.

Even with the support of the 48V mild-hybrid system, the Australian-spec Audi S6 has a claimed gasoline economic climate determine of 8.4L/100km.

Audi regionally launched the present-day, fifth-generation S6 in January 2020 and it hasn’t been given a mid-existence update nevertheless.

In February 2022, the S6 obtained a value improve of $5000 thanks to “rising materials prices and continued supply challenges”. It now starts at $158,000 ahead of on-street charges.

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More: Almost everything Audi S6

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