Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 142,890 pages of information and 228,796 images on early companies, their products and the people who designed and built them.
Note: This is a sub-section of Rover
1904 Three years after Starley's death in 1901, the Rover Cycle Co began producing automobiles with the two-seater 6-hp 'Rover Eight' to the designs of Edmund W. Lewis who had joined the company from Daimler. It sold at 100 guineas.
1904 April. Details of the Rover Carburetter designed by Lewis.
1905 January. Details of the 6-hp car.
1905 July. Details of the new 16-hp car.
1905 September. Details of the T.T. car.
1905 November. Company name changed to Rover Co
1906 Produced 6 h.p. (Single-cylinder), 8 h.p. (Single-cylinder) and 16-20 h.p. (Four-cylinder) models with shaft-drive. 
1906 February. Reports on using the 6-hp car.
1908 August. Details of the 20hp T.T. car.
1910 The '12' appeared and sold for £350.
1911 August. Details of the 12-hp (Knight slide valves) - Knight-Rover - two-cylinder car.
1911 October. Details of two new cars: 12hp and 18hp. Also retained is the 6hp and 8hp single-cylinder models and the 12hp Knight.
1911 May. Details of the new 12-hp car.
1912 May. Details of the 18-hp car.
1912 November. Details of the 12hp and 18hp cars.
1913 October. Details of their only car for next year: 12hp.
1913-1917 For a list of the models and prices see the 1917 Red Book.
1914 December. Details of the 12-hp car.
Produced a 8-hp model with a flat-twin air-cooled engine.
1920 November. Exhibited at the Motor Car Show at Olympia and the White City with a lightweight car weighing 9 cwt and seating two persons. 
1948 First Land Rover appeared.
1950 Designer F. R. Bell and Chief Engineer Maurice Wilks unveiled the first car powered with a gas turbine engine. The two-seater 'JET1' had the engine positioned behind the seats, air intake grilles on either side of the car and exhaust outlets on the top of the tail. During tests, the car reached top speeds of 140km/h, at a turbine speed of 50,000 rpm. The car ran on petrol, paraffin or diesel oil, but fuel consumption problems proved insurmountable for a production vehicle. It is currently on display at the London Science Museum.
1951 Exhibitor at the 1951 Motor Show in the Car Section.
The 1950s and 1960s were fruitful years for the company, with the Land Rover becoming a runaway success (despite Rover's reputation for making up-market saloons, the utilitarian Land Rover was actually the company's biggest seller throughout the 1950s, '60s and '70s), as well as the 'P5' and 'P6' saloons equipped with a 3.5L aluminium V8, the design and tooling of which was purchased from Buick, and pioneering research into gas turbine fuelled vehicles.
1961 Had eight subsidiaries. Manufacturers of Rover cars and Land Rover commercial vehicles. 
1963 Rover and the BRM Formula One team joined forces to produce a gas turbine powered coupe, which entered the 1963 24 hours of Le Mans, driven by Graham Hill and Richie Ginther. It averaged 107.8 mph and had a top speed of 142 mph. This car is also in the London Science Museum.
1963 Motor Show exhibitor. Full and detailed description of the BRM Gas Turbine Car. Also showed 2000, 3-Litre and 110 models. 
In 1967, Rover became part of the Leyland Motor Corporation, which merged with the British Motor Holdings to become British Leyland Motor Corporation. This was the beginning of the end for the traditional Rover, as the Solihull based company's heritage drowned beneath the infamous industrial relations and managerial problems that beset the British motor industry throughout the 1970s.
1970 Rover combined its skill in producing comfortable saloons and the rugged Land Rover 4x4 to produce the Range Rover, the first car to combine off-road ability and comfortable versatility. Powered by the ex-Buick V8 engine, it had innovative features such as a permanent 4 wheel drive system, all-coil spring suspension and disc brakes on all wheels. Able to reach speeds of up to 100 MPH, yet also capable of extreme off-road use, the original Range Rover design was to remain in production for the next 26 years.
1976 The Rover 'SD1' of 1976 was an excellent car, but was beset with so many build quality and reliability issues that it never delivered its great promise. A savage programme of cutbacks in the late 1970s led to the end of car production at the Solihull factory which was turned over for Land Rover production only. All future Rover cars would be made in the former Austin and Morris plants in Longbridge and Cowley, respectively.
In the 1980s, the slimmed-down BL used the Rover badge on a range of cars co-developed with Honda. The first Honda-sourced model, released in 1984 was the 'Rover 200', which, like the Triumph 'Acclaim' that it replaced, was based on the Honda 'Ballade'.
In 1986, the Rover SD1 was replaced by the Rover 800, developed with the Honda Legend. By this time Austin Rover had moved to a one-marque strategy and was renamed simply 'Rover Group'. The Austin range were now technically 'Rovers', though the word Rover never actually appeared on the badging — there was instead a badge similar to the Rover Viking shape, without wording. These were replaced by the 'Rover 400' and 'Rover 600', based on Honda's 'Concerto' and 'Accord'. This was to prove to be the turn-around point for the company, steadily rebuilding its image to the point where once again 'Rovers' were seen as upmarket alternatives to Fords and Vauxhalls.
1994 The takeover by BMW saw the development of the 'Rover 75', before the infamous de-merger in 2000.
2000 BMW retained the rights to the Rover name (and the associated portfolio of brands such as 'Mini', Triumph and Austin-Healey) after it sold the business, only licensing it to the Phoenix consortium while it was in control of 'Rover'. The BMW management knew that 'Rover' needed a new product lineup to be competitive with Opel/Vauxhall, Volkswagen, Ford and the other leading mainstream volume manufacturers. The '75' was the first part of this lineup. The MINI was the second. To replace both the 200 and the 400 with a more direct successor to the 1980s 200 was the 'Rover 55' (R30 project) intended to combat the Opel 'Astra', Ford 'Focus' and Volkswagen 'Golf' in the competitive and lucrative European small family car segment. This high volume semi-premium vehicle was cancelled in 2000, just as the Rover group was sold. The BMW 1-Series is considered by some to be the result of this project. BMW has the rights to the R30 project's engineering and design.
2005 The company continued as the MG Rover Group but production ceased on April 7, 2005, when it was declared insolvent. In July 2005 the entire company was sold to the Nanjing Automobile Group, who indicated that their preliminary plans involved relocating the Power-train engine plant to China while splitting car production into Rover lines in China and resumed MG lines in the West Midlands (though not necessarily at Longbridge), where a UK R&D and technical facility would also be developed.