The facelifted Mercedes AMG S63 and S65 have been unveiled and should be on our streets in about six months’ time, to coincide with the revised S-class.

The raucous 6.3-litre V8 and 6.0-litre V12 engines stay, but the cosmetic changes are more incremental than mental. Both cars get a slightly more beakish grille and the rear diffuser insert is now colour-coded rather than black, a change not expected to benefit black cars.

Chromed “6.3 AMG” or “V12 Biturbo” lettering has been added to the front wings, but the only other changes you’re likely to spot are the AMG-only LED lights at the front and rear.

Equipment changes are minimal but include the new TVB (Torque Vectoring Brake) system, which stabilises the rear inner wheel when a touch of brake is applied under cornering. The equipment list includes a reassuring array of other TLAs (Three Letter Acronyms) to improve driver confidence in ways we may never truly understand. Or notice.

Prices are expected to start at £99,000 for the S63 and £160,000 for the S65. Both will be limited to 155mph and the big brother wins the 0-60mph dash by a pointy beak at 4.4 seconds.