Mercedes-Benz gave its C-class mid-size sedan a major update for the 2015 model year.

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The new C400 comes with LED headlights standard, although dynamic cornering lights are an option.

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Mercedes-Benz smoothed the lines of the new C-class in a similar manner to the new S- and E-class cars.

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The C400 comes with a 3-liter V-6 using twin turbochargers and direct injection.

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The new C-class is slightly larger than the outgoing model, affording more rear seat space.

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Eighteen-inch AMG wheels are an $1,190 option.

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An air suspension option is also available.

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Mercedes-Benz's 4Matic all-wheel-drive system comes standard on the C400.

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Slight bolstering on the front seats does not interfere with egress.

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Retaining Mercedes-Benz style, power seat controls sit on the doors.

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The rear bench features increased space over the previous model.

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An 8.4-inch display sits at the top of the stack.

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Mercedes-Benz uses electric power steering in the new C-class, allowing different steering programs.

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An instrument cluster LCD shows trip information, driver assistance systems, navigation and audio.

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The console holds a drive mode switch and controls for the infotainment system.

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The C400 includes drive modes ranging from Eco to Sport Plus.

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Navigation system maps include details such as buildings.

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Google maps are available from the navigation system, but load very slowly.

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Mercedes-Benz built-in apps include Internet-based radio, Facebook and Google destination search.

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Mercedes-Benz uses very nice graphics in its infotainment system.

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Audio sources include Bluetooth streaming, Internet streaming, HD Radio, satellite radio and the car's own hard drive.

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The car offers an excellent music library interface, including a keyword search for quick album and artist look-ups.

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This cover flow interface is an excellent way to play music by album.

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A Burmester audio system comes standard in the C400.

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