When thinking of eight-cylinder engines, V8s are usually the first ... its short production run; the 1.7-liter flat-four was replaced by a 1.8-liter version, while the 914/6 was discontinued ...

Autocar claims AMG will use its familiar 4.0-liter twin-turbo V-8, but switch to a flat-plane ... allowing the engine to fit in vehicles that weren’t engineered with an eight-cylinder motor ...