Rear-wheel drive E-Class sedans are available in three models, E350, E63 AMG, and E350 BlueTEC. The E350 and E550 sedans are available with 4MATIC all-wheel drive. The E350 wagon is available with 4MATIC all-wheel drive and the rear-wheel drive E63 AMG wagon returns. The E-Class coupes and new cabriolets are available with rear-wheel drive as the E350 and E550. All models include a seven-speed automatic transmission. New for 2012 a 302-hp, 3.5-liter gasoline V6 engine powers the E350. Also new for 2012 the E550 includes a 402-hp, 4.6-liter bi-turbo V8 engine under the hood while the E63 AMG now has a 518-hp, 5.5-liter bi-turbo V8 with AMG speedshift. The E350 BlueTec returns with a 210-hp, 3.0 liter turbocharged and intercooled diesel V6. The sedans seat five, the wagon seats up to seven, while the coupe and cabriolet seat four. Multi-zone climate control is standard and all models come with a lengthy list of standard features.The 2012 E-class sedan, coupe, and cabriolet carry over from 2011 with new engines. The E350 BlueTEC diesel sedan remains the same. The E350 4MATIC wagon carries over, the E63 AMG wagon is new.