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2018 Audi S4 is an understated performer

A new turbo engine and chassis tuning give the new S4 more impressive performance chops, but subtle looks help it fly under the radar.

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Jon Wong
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For 2018, Audi's S4 moves from a supercharged to turbocharged V6 engine. 

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While the outgoing engine produced 333 horsepower, this one features 354 ponies.

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Together with an eight-speed automatic transmission, the new S4 can hit 60 mph in 4.4 seconds according to Audi.

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Sadly, the six-speed manual gearbox that was available in the previous S4 disappears from the options list for 2018.

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The S4's new drivetrain is estimated to return 21 mpg in the city and 30 mpg on the highway according to the EPA.

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Compared to the previous supercharged engine, the new turbocharged engine is 31 pounds lighter.

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The S4's Quattro all-wheel drive system features a rear-bias 40/60 default torque split.

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To improve handling further, the S4 is available with a torque-vectoring rear differential.

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The 2018 Audi S4 starts at $51,875, which includes $975 destination.

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Our test car features an as-tested price of $59,550.

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Click or scroll through to see more of the 2018 Audi S4.

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