The company's traditional policy on appropriateness of change was reflected in developing the Bentley Mulsanne by phasing in major technological advances into the Bentley Mulsanne S. Firmer suspension enhanced the Bentley Mulsanne S's roadholding and interior features from the Bentley Turbo R were incorporated. Light alloy wheels were used for the first time on basis model in the Bentley range. The 1989 model year (being introduced in September 1988) saw the broad one-piece headlamps having been substituted by twin headlamps.

Technical Data:
8 cylinder 90 degree V-configuration, aluminium-silicon alloy cylinder block with cast iron wet cylinder liners; bore x stroke 104.14 x 99.06 mm (4.1 x 3.9 in), capacity 6,750 cc, aluminium alloy cylinder heads; Bosch K-Jetronic fuel injection (from 1990 Bosch K-Motronic fuel injection and ignition control system); 3-speed automatic gearbox; hypoid bevel final drive; independent suspension with coil springs front and rear, hydraulic self-levelling height control rear; ventilated disc brakes front, plain discs rear; wheelbase 3,061 mm (120,5 in) or 3,161 mm (124,5 in); tyres 235/70HR x 15