It's All Natural: 2011 Mercedes-Benz C63 AMG and Its NA V-8 is Our BaT Pick of the Day

• The W204-generation C63 AMG was the last iteration of Mercedes's compact AMG C63 sedan to offer a naturally aspirated V-8 engine.

• This 2011 C63 AMG includes the P31 AMG Development package, which nets 481 horsepower—30 more than the standard 2011 C63 AMG.

• Bidding for this car closes on May 24, 2022.

We like Mercedes-AMG's twin-turbo V-8 as much as the next car enthusiast. Even so, we still hold a spot in our hearts for the brand's naturally aspirated eight-cylinder engines of yore. Specifically, the 6.2-liter unit AMG installed in the likes of the SLS supercar and W204 generation of the C-class sedan.

From model years 2008 to 2014 (and 2015 if you include the C's two-door coupe body style), the AMG arm of Mercedes-Benz fit a 451-hp variant of its burly V-8 under the hood of the three-pointed star's small four-door—with enough grunt to push a 4034-pound example of the model to 60 mph in 3.9 seconds in our testing.

In 2010, Mercedes answered the call for even more power by way of the optional P31 AMG Development package. Thanks to a new tune to the engine management system and connecting rods, pistons, and a crankshaft cribbed from the SLS, the engine's stable added 30 horses to the mix, bringing output up to 481 horsepower. Not quite the more than 500-hp the big bent-eight produced in other AMG models of the time, but still plenty for a car of this size.