620 SLi 620 GSi 623 SLi 623 GSi 623 iS 620ti 620 SDi 620 SLDi 620 GSDi Badging was determined by engine size: 618 models had 1.8 litre engines, 620 had 2.0 engines, 623 had 2.3 litre engines. With the exception of the T-Series 620ti, all petrol engines were sourced from Honda, and all diesel versions were L-series units. The Rover K-series engine was not used in the 600. The 600 was available in a number of different trims. All models had power steering, electric front windows, remote central locking with alarm and immobiliser and tinted windows. The Si had split rear seats, Si Auto and above got a sunroof. SLi trim added electric rear windows and wooden door trim; GSi models received 15" multispoke alloys and full leather trim. From 1994, all cars had a driver's airbag. The 623iS had half leather trim and a small lip spoiler on its boot. The ti featured a set of 16" six spoke alloys with uprated suspension, 'Torsen' gearbox and a dark half leather interior. Run out models included: 618iL 618iS 620iSD 620iLD S and SD models had the appearance of the 620ti, with the same six spoke 16" alloy wheels and half leather trim. L and LD models had seven spoke 15" alloy wheels and full leather trim resembling the GSi models. The range was revised/mildly "facelifted" twice. The first revisions were in 1996, which included a slightly revised interior, with a padded front arm rest and separate rear head rests, all models, apart from the ti, had 15" wheels, high level brake light, new alarm and immobiliser system (the alarm changed from an infra red to a radio controlled handset and the ignition key became a 'transponder key', without which the immobiliser could not be disarmed), drink holders in the front doors, electric headlight adjuster and all models from Si specification upwards receive air conditioning and 15" alloys. At this time, the T-series changed ignition system from Distributor to 'wasted spark', pistons, Klinger head gasket, LSD and the steering was changed to Rover's Positive Centre Feel (PCF) system. United Kingdom cars which featured these revisions were all badged as "600" only, in line with most other models in the Rover range which no longer had badging by engine sizes. The final revisions came in 1997, just over a year later, and all cars got slightly lowered suspension (~10 mm) and