In automobile design, a rear-engine design layout places the engine at the rear of the vehicle. The center of gravity of the engine itself is behind the rear axle. This is not to be confused with the center of gravity of the whole vehicle, as an imbalance of such proportions would make it impossible to keep the front wheels on the ground.
Smart Fortwo's three-cylinder engine officially sits behind the rear axle.
The Porsche 911 is a two-door 2+2 high performance rear-engined sports car introduced in September 1964 by Porsche AG of Stuttgart, Germany. It has a rear-mounted flat-six engine and originally a torsion bar suspension. The car has been continuously enhanced through the years but the basic concept has remained unchanged. The engines were air-cooled until the introduction of the 996 series in 1998.
The 1 millionth 911 produced on display at Volkswagen Group Forum, Berlin
The original Porsche 901 on display at the 2019 Geneva Motor Show
The 911-based 912, powered by a flat-4 engine (1967)
Porsche 911 2.0 Coupe (1964) at the Porsche Museum in Stuttgart