Sportbrake price released

It will be available with 2.2- and 3.0-litre diesels, with the former now coming in 163 PS and 200 PS outputs.

Both share highly competitive CO2 emissions starting from just 135 g/km and economy of 55.4 mpg.

The 3.0-litre turbocharged V6 engine comes in 240 PS Diesel and 275 PS Diesel S derivatives.

Each emits 163 g/km of CO2 and returns 46mpg on the combined cycle.

These impressive figures are backed up by strong performance too; in Diesel S form the XF Sportbrake can accelerate to 60mph from rest in just 6.1 seconds, and in 6.7 seconds for the 240PS variant.

The XF saloon also benefits from the new engine upgrades. Applied to the saloon, the new 2.2-litre Diesel engines share the same economy and CO2 figures as the Sportbrake.

Deliveries of the saloon commence in September with prices starting at £29,940 on-the-road.

The XF saloon and Sportbrake will both adopt the eight-speed automatic gearbox and Stop/Start as standard across the engine range - improving emissions on the V6 Diesel engines by six per cent on the saloon.

For the first time, the XF range will also be available with the Meridian audio system - replacing the Bowers and Wilkins system and promising precise yet powerful sound quality via a sophisticated amplifier and high quality speaker units.

Heading the XF range is the new XFR Speed Pack. Featuring a speed limiter raised to 174mph, the 510PS XFR Speed Pack car is equipped with revised engine and gearbox calibration to match the increased top speed. A new front aero splitter and a new rear wing distinguish the Speed Pack car.

Joining the range is a new 3.0-litre supercharged V6 petrol engine developing 340 PS.

The engine, which is also set to appear in the new F-Type, replaces the naturally aspirated 5.0-litre V8 in the XF range.

The 3.0-litre V6 S/C is capable of accelerating from 0-60mph in 5.7 seconds and on to a limited top speed of 155mph, returning fuel economy figures of 30mpg on the combined cycle and emitting 224g/km of CO2.