Four-door, V8 version of AMG GT sports car is a bit pricey...

Mercedes-AMG’s new V8-powered GT 63 Four-Door Coupe has gone on sale with a price tag of £121,350.

Essentially a more spacious, more practical version of the two-door GT sports car, the 63 model uses the same 4-litre V8 petrol engine with 577 bhp in standard guise. As a result, 0-62 mph takes 3.4 seconds, while the top speed is 193 mph.

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The more powerful 'S’ model, however, squeezes 630 bhp from the same V8 powerplant, allowing a two-tenth drop in the 0-62 mph time (now 3.2 seconds) while the top speed rises to 196 mph.

Both engines send their power to all four wheels via a nine-speed automatic gearbox, and they both return about 25 mpg on the new WLTP economy and emissions test.

2019 Mercedes-AMG GT 4-Door

At launch, three different trim levels will be available, with the £121,350 starting price buying you the basic 63 4Matic+ model.

Available solely with the less potent version of the V8 engine, this 'base’ variant gets 20-inch alloy wheels, a 360-degree parking camera and two 12.3-inch digital displays in lieu of instruments and infotainment screens. Sitting side-by-side, the two create a “widescreen effect” across the cabin.

2019 Mercedes-AMG GT 4-Door

Other standard kit includes heated seats front and rear, keyless start and a Burmeister surround-sound system.

Further up the range, the 63 S gets the more powerful engine, as well as the AMG Dynamic Plus package. The performance-oriented pack includes an electronic limited-slip rear differential,a 'Race’ driving mode and larger brakes with yellow-painted callipers.

All that comes at a price, though. The S model is more than £14,000 more expensive than the standard Four-Door Coupe, coming in at £135,550.

2019 Mercedes-AMG GT 4-Door

The limited-edition Edition 1 model, meanwhile, is even more expensive. The £148,950 car is based on the S model, but comes with Graphite Grey paint as standard, along with 21-inch alloy wheels with black inserts. There's an aerodynamics package, too, with a prominent fixed rear spoiler and a tweaked front splitter, while the interior gets grey leather seats with yellow contrast stitching.

The Edition 1 also features the Premium Plus package, which is a £3,600 option for other models. Included in the price are contoured seats with a massage function, a head-up driver display and seat cooling for those in the front.

2019 Mercedes-AMG GT 4-Door

Those likely to use the rear seats more regularly can also opt for the Rear Luxury Lounge package, which incorporates separate rear seats with a centre console and a touchscreen centre display. The £3,695 also includes wireless phone charging for rear passengers and climatised cup holders.

Gallery: 2019 Mercedes-AMG GT63S 4-Door