The Rover SD1 is both the code name and eventual production name given to a series of executive cars built by the Specialist Division (later the Jaguar-Rover-Triumph division), and finally the Austin Rover division of British Leyland from 1976 until 1986, when it was replaced by the Rover 800. The SD1 was marketed under various names. In 1977 it won the European Car of the Year title.
In "SD1", the "SD" refers to "Specialist Division" and "1" is the first car to come from the in-house design team.
The SD1 was the final Rover-badged vehicle to be produced at Solihull. Future Rover models would be built at the former British Motor Corporation factories at Longbridge and Cowley.
History
Background
In 1971, Rover, at that time a part of the British Leyland (BL) group, began developing a new car to replace both the Rover P6 and the Triumph 2000/2500. The designers of both Triumph and Rover submitted proposals for the new car known as the Triumph Puma and Rover P10 respectively, of which the latter was chosen. David Bache was to head the design team, inspired by exotic machinery such as the Ferrari Daytona and 365 GTC/4, and the late 1960s design study by Pininfarina for the BMC 1800, which also guided the design of the Citroën CX. Spen King was responsible for the engineering. The two had previously collaborated on the Range Rover. The project was first code-named RT1 (for Rover Triumph Number 1) but then soon changed to SD1 (for Specialist Division Number 1) as Rover and Triumph were put in the new "Specialist Division" of British Leyland.
Design
The new car was designed with simplicity of manufacture in mind in contrast to the P6, the design of which was rather complicated in areas such as the De Dion-type rear suspension. The SD1 used a well-known live rear axle instead. This different approach was chosen because surveys showed that although the automotive press was impressed by sophisticated and revolutionary designs the general buying public was not unless the results were good. However, with the live rear axle came another retrograde step – the car was fitted with drum brakes at the rear.
Rover's plans to use a new 2.2-litre DOHC 16-valve Slant-Four engine with Bosch L-Jetronic fuel injection were soon abandoned as BL management ruled that substantially redesigned versions of Triumph's six-cylinder engine were to power the car instead. The Rover V8 engine was fitted in the engine bay. The three-speed automatic gearbox was the BorgWarner 65 model.
The dashboard of the SD1 features an air vent, unusually, directly facing the passenger. The display binnacle sits on top of the dashboard in front of the driver to aid production in left-hand drive markets, since it avoided the expense of producing two different dashboard mouldings for LHD and RHD versions. The air vent doubles as a passage for the steering-wheel column, and the "podular" display binnacle can be easily fitted on top of the dashboard on either the left or right-hand side of the car. This concept was not entirely new; it had also been used on the Range Rover and was used again on the Mk.1 Austin Metro, both of which were also designed by David Bache. The interior of the Series 1 was notable for its lack of wood embellishment in comparison to previous Rover saloons, with an extensive use instead of modern soft-feel plastics, and a new "skeletal" version of the Rover badge would appear on the bonnet - Bache was keen that the SD1 should make use of the latest industrial design trends and be a clean break from the past.
An estate body had been envisaged, but it did not get beyond the prototype stage. Two similarly specified estates have survived, and are exhibited at the Heritage Motor Centre and the Haynes International Motor Museum respectively. One was used by BL chairman Sir Michael Edwardes as personal transport in the late 1970s. The two cars as befit prototypes differ in the detail of and around the tailgate. One car has a recessed tailgate, while the other has a clamshell arrangement, where the whole tailgate is visible when closed.
The SD1 was intended to be produced in a state-of-the-art extension to Rover's historic Solihull factory alongside the TR7. It was largely funded by the British government, who had bailed BL out from bankruptcy in 1975. Unfortunately, this did nothing to improve the patchy build quality that then plagued all of British Leyland. That, along with quick-wearing interior materials and poor detailing ensured that initial enthusiasm soon turned to disappointment.