The S90 comes with a choice of two different diesel engines - both based around the same 2.0 litre turbocharged motor. The D4 is the less powerful but most popular model, with 190 horsepower which gives a 0-60 time of just 8.2 seconds and a top speed of 140 mph, yet can still return 64 mpg on the official EU combined test (though this will be less in real life). the D4 engine is front wheel drive only (you need the D5 engine for 4 wheel drive) and comes with the 8 speed Geartronic automatic gearbox as standard too. Momentum, R Design and Inscription spec levels are all available with this engine. Orangewheels has some of the best discounts available with our new 2020 Volvo S90 D4 Diesel deals, just click on the model above to add your required exterior colour and any optional extra equipment to see what is the best offer we can find you, and just how much you could save with our approved main dealers cheapest prices, either as a cash deal or with a low rate PCP finance quote.