View 6 images in this gallery.

The five-seat BMW Gran Coupé marries style and practicality to become almost irresistible.

Take the already great-looking BMW 6 Series, stretch it and add two more doors and you get a stunning-looking cruiser that is so sublime it simply swallows kilometres. The only downside to this breathtaking machine is the asking price, starting at €97,110 for the 313bhp 640d SE. It is only for the fortunate few.

The exterior of BMW's first ever four-door coupé is beautifully low set. The muscular bonnet and small DLO (glazed area) combine seamlessly together and blend into the rear as if the Gran Coupé was the original and the two-door 6 Series a spin-off! The frameless doors add to the coupé styling. Another quality feature is the subtle Gran Coupé badging that sits behind the rear door glass. At just over five metres long (5,007mm), the Gran Coupé is a big machine and has serious road presence.

Inside, the obvious news is the amount of rear passenger space. BMW describes the seating as 4+1, so ideally fitting two adults in the back is the most comfortable, but three can fit if needed. The rear seats fold to add to the versatility of the 460-litre boot. With the rear seats down there is 1,265-litres of cargo space available. Up front the 10.2-inch centre display screen is classy, while all other controls are familiar to any 6 Series driver.

On the road in our 640d test car the extra long wheelbase (+113mm) means you can corner the rear-wheel drive machine with great security at speed. The standard eight-speed automatic gearbox makes light work of stop-start city traffic, but when you provoke the Gran Coupé the big machine can really hustle along with a 0-100kph time of 5.4 seconds. 'TwinPower' turbo engines feature as standard and while the six-cylinder 640d is all you'll need (a six-cylinder, 320bhp 640 petrol is available), there is also a new generation V8 petrol engine coming in the 650 with 450bhp. 0-100kph takes just 4.6 seconds! The twin turbo V8 will be available with xDrive four-wheel drive technology.

The only downside to the Gran Coupé's ride is the way that the front wheels, with their massive alloy rims, deal with minor potholes - sending quite harsh vibrations through to your hands on the steering wheel. That niggle aside, the 6 Series Gran Coupé makes the driver feel very special.

For those wishing to maximise economy, the 'Driving Experience' switch that allows the driver adjust the vehicle's driving dynamics has - apart from 'Comfort' and 'Sport' - an 'Eco-Pro' mode - that we know well from other Beemers. When Eco-Pro is selected the car operates with fuel saving in mind. From a readout below the speedo you can see how many kilometres you have recovered while being frugal with your right foot. BMW quotes fuel consumption for the 640d at between 5.5 and 5.7 litres per 100 kilometres, depending on the tyre selected.

BMW Gran Coupé is a fantastic luxury car that is pure class.

Michael Sheridan