The Mercedes-Benz E400 4matic is a full-size luxury sedan that is part of Mercedes-Benz's E-Class lineup. It is powered by a 3.0-liter V6 biturbo engine that produces 329 horsepower and 354 lb-ft of torque, and comes with the company's 4matic all-wheel-drive system. The E400 4matic has a comfortable and luxurious interior, with plenty of advanced safety and technology features, as well as a smooth and powerful ride.