2011 Jaguar XJ has a V8 engine under the hood.

Every XJ has a V8 engine under the hood. A standard engine is powerful; a 4.2L aluminum V8 engine with 300 horsepower. It uses cam phasing to increase response with lower emissions. Advanced versions of the XJ feature higher performance engines. The R model features a supercharger with 400 horsepower.2011 Jaguar XJ L Supercharged Side View2011 Jaguar XJ L Supercharged First Drive2011 Jaguar XJ