The S3 gained the new larger bumpers but kept the simpler sill line and glazed rear hatch of the S2.2 body. Both cars came with BBS alloy wheels. One interesting omission was that the Esprit S3 had no cigarette lighter as standard equipment; ashtrays are tucked away in the door sills. Minor changes were made to bodywork and front suspension for the 1985 model year. The final incarnations of the Giugiaro-styled Esprit were announced in April 1986. Higher compression ratios for the engines was indicated by the 'HC' moniker. Power output of the naturally aspirated engine rose to and for the Esprit HC, and to and for the Turbo Esprit HC, with more torque available at lower engine speeds. For markets with stringent emissions requirements like the United States, Lotus introduced the first fuel-injected Esprits. The HCi variant added Bosch KE-Jetronic fuel injection and a catalytic converter to the higher compression engine. This engine had the same peak power as the carburetted version but at a somewhat higher engine speed. Torque dropped to . In 1987, the Esprit was restyled by British designer Peter Stevens. Stevens, who would later go on to design the McLaren F1, produced a less angular, more rounded Esprit. Giugiaro is said to have liked the new shape, claiming it was perhaps too close to his original design. The exterior changes were accompanied by a redesign of the interior that gave more space to the occupants. The revised Esprit was not given a new "Series" number but is often called by its project code of X180. Panels for the body were produced using a new process called VARI (Vacuum Assisted Resin Injection). This method, which was patented by Lotus, offered advantages over the previous hand lay-up process. Kevlar reinforcement was added to the roof and sides for roll-over protection. This also increased the Esprit's torsional rigidity by 22%. The X180 cars inherited most of their mechanical components from the earlier HC Esprit and Turbo Esprit, although the name for the forced induction model was now Esprit Turbo. 1988 model year North American Esprit Turbo models kept the Citroën transaxle and Bosch fuel injection system used in the previous model year. Other X180 models received a new Renault UN-1 transaxle, which necessitated a move to outboard rear brakes. Power output of the Type 910 turbocharged engine was unchanged, but 0–97 km/h (60 mph) acceleration times decreased from 5.6 seconds to between 5.4 and 5.1 seconds.