a cigar lighter, chromed wheel trim rings and twin Lucas SFT 576 spotlamps. To minimise the cost of the 105R, these additional items were not standard, however they were provided on the (higher priced) 105R De Luxe. The 105R featured a "Roverdrive" automatic transmission. This unit was designed and built by Rover and at the time was the only British-built automatic transmission. Others had bought in units from American manufacturers such as Borg-Warner. This unit was actually a two-speed automatic (Emergency Low which can be selected manually and Drive) with an overdrive unit for a total of three forward gears. The 105S made do with a manual transmission and Laycock de Normanville overdrive incorporating a kick-down control. The 105S could reach a top speed of 101 mph (163 km). The Motor magazine tested a 105R de luxe in 1957 and found it to have a top speed of and acceleration from 0– of 23.1 seconds. A fuel consumption of was recorded. The test car cost £1696 including taxes of £566. Production of the 105 line ended in 1958 for the 105R and 1959 for the manual transmission 105S, 10,781 had been produced, two-thirds with the manual transmission option. For 1959 the manual model was described simply as a 105 and the trim and accessory level was reduced to match the other models. When the Rover 100 was announced in October 1959 it was described as the replacement for the Rover 90 and the Rover 105. Rover 80 The 3-litre P5 car introduced in September 1958 was in full production and the obsolescent P4 range was reduced to just two cars, this new four-cylinder 80, announced on 24 October 1959 and the Rover 100 announced at the same time. The 80 engine was a new Land Rover-derived straight-four overhead-valve engine displacing , entirely different from the units used in all the other models. With 80 hp (59 kW) available, the car could top 85 mph (137 km/h). Girling vacuum servo-assisted disc brakes at the front were new, and the car used wider tyres and had updated styling. Overdrive, operating on top gear only, was standard on the four-speed transmission. Options included a radio, two tone paint schemes, and either a bench or individual front seats. These options also apply to the 100 (see below). The four-cylinder cars were never popular, and just 5,900 had been built when, after 3 years, production