Currently reading: Land Rover's mild-hybrid tech spells end for V8 diesel Range Rover
New six-cylinder units offer improved acceleration and efficiency over ageing Ford-sourced V8
2 mins read
26 March 2020

Land Rover is set to introduce new mild-hybrid diesel engines to the Range Rover and Range Rover Sport in the coming months, effectively spelling an end to the V8 diesel, Autocar has learned.

After introducing its first mild-hybrid systems in four-cylinder powerplants for the new Evoque and Discovery Sport last year, the technology will be introduced in two new six-cylinder diesels. Land Rover hasn’t officially confirmed details, however. 

It is understood that a 296bhp 3.0-litre MHEV unit, badged D300, will be offered on HSE, HSE Dynamic and Autobiography Dynamic trims of the Range Rover Sport. The mild-hybrid system will give a moderate efficiency boost, as well as aiding smooth stop/start driving thanks to an integrated starter-generator. 

Exclusive: every new Range Rover coming until 2023

A new, more powerful version of that same engine putting out 345bhp (badged D350) will be available in higher-end trims such as HST. That unit will effectively replace the flagship Ford-sourced 4.4-litre diesel V8, currently built in Mexico and based on a 10-year-old design. Oddly, information for the new unit has already been published by automotive data suppliers, despite it not being listed by Land Rover itself.

The data reveals that the new unit puts out 516lb ft of torque, giving a 0-62mph time of 6.5sec and a top speed of 140mph in the Range Rover Sport. It also claims 35.3mpg and emits 210g/km of CO2. These figures are notably improved on the V8 diesel. 

The same two engines will be added to the full-size Range Rover, with the 0-62mph of the D350 rising to 7.1sec and CO2 emissions up to 225g/km. The D350 will only be available on higher trims of the Range Rover, too. 

We can also anticipate either one or both of these units to emerge on the Jaguar side with the upcoming facelift of the XF and F-Pace, originally expected to be unveiled by now but likely to be pushed back due to the coronavirus pandemic. 

While it remains available to order, it is unclear if there is any intention to return the V8 diesel to the brand in future, but it’s unlikely given the relative inefficiency it offers next to six-cylinder alternatives. This unit is one of the last Ford-sourced engines to be produced, with production of the AJ petrol V8 to cease towards the end of this year at Ford’s Bridgend factory. 


Range Rover EV to be most road-biased Land Rover yet

Jaguar Land Rover to invest £1bn in three new UK-built EVs

New £25k Land Rover to be followed by luxo-Defender


Find an Autocar review

Read our review

Car review
Land Rover Range Rover review hero front

The fourth-generation Range Rover is here to be judged as a luxury car as much as it is a 4x4

Join the debate


26 March 2020
Good riddance, another dinosaur gone.

26 March 2020

Great stuff. Be nice to get a more powerful diesel in the defender too.

26 March 2020
Andrew1 wrote:

Good riddance, another dinosaur gone.

Do you regard the superchared petrol V8, the one that puts out far more CO2 and uses more fuel than the diesel V8, a "dinosaur" too ?

26 March 2020

  Old tech eventually gets replaced with new tech, how else would we evolve?

26 March 2020
Peter Cavellini wrote:

  Old tech eventually gets replaced with new tech, how else would we evolve?

Its fine to replace things with new things that are better, but not so good when its only done to comply with rules someone else set. 

I am sure the RangeRover will be better one day when it runs on Elecric power, but the move from well developed ICE power to EV is going so quickly not all electrified cars are better than the pure ICE cars that went before them. I very much doubt JLR would be doing this if it wasnt for the EU fines based on CO2.

26 March 2020

And yet their new straight six engine hasn't yet found its way under the bonnet of the facelifted XE, it's not available in the Velar and it doesn't appear it'll feature under the forthcoming facelifted XF and F-Pace either. Unless it doesn't fit in the D7a platform which underpins those models?

26 March 2020
Saucerer wrote:

And yet their new straight six engine hasn't yet found its way under the bonnet of the facelifted XE

Jaguar decided it was not worth the investment needed to re-engineer the engine bay of the XE to accept the six pot. And incidently they made the same decision for the F-type. What a shame.

26 March 2020

I think JLR tried this before and the sales were very poor.


26 March 2020

It does take too long to role out accross the range. Then when you add restrictions such as top of the line range rover first it becomes very slow. Mercedes offer their new diesel in the E class so why JLR doesn't hard to know. No point being smallest and slowest to market. 

26 March 2020

Its not a "Ford sourced V8", its a Ford/Peugeot joint engine.


Add your comment

Log in or register to post comments

Find an Autocar car review