Sport Pack features aerodynamic changes and 20-inch alloy wheels while the Speed Pack bumps up top speed on the XJ.

Jaguar has announced new Sport and Speed packs for the XJ model.

The Sport Pack includes new aerodynamic features such as a front splitter and extended rear boot lip. The package also includes 20-inch "Venom" alloy wheels and red brake calipers.

For the inside, the Sport Pack also offers Jaguar Performance sport seats and a Piano Black trim.

The Speed Pack is available for all purchasers of the Sport Pack and increases the top speed on the XJ from 155mph (250km/h) to 174mph (280km/h).

The Sport and Speed Packs are available for all XJ models excluding the XJ SC 510 PS.

Gallery: Jaguar XJ gets new Sport and Speed packs