E12 528i - BMW that you don’t see anymore

BMW 5 Series first generation e12 post facelift 1977-1981
1981 E12 528i straight inline six M30 135 kW (184 PS)
at 5,800 rpm 235 N⋅m (173 lb⋅ft)
at 4,200 rpm 1978–1981
The BMW E12 is the first generation of 5 Series executive cars, which was produced from 1972 to 1981 and replaced the saloon models of the BMW New Class range.

Initial models were powered by inline-four engines, using either a carburettor or fuel-injection. A year after launch, the first model powered by a straight-six engine was introduced. By the final years of E12 production, most models used a straight-six engine.

There was no M5 model for the E12, however the E12 M535i is considered to be the predecessor to the M5. The E24 6 Series coupés were built on the E12 platform up until 1982. The E12 was replaced by the E28 5 Series in 1981, although the tools were sent to South Africa where E12 assembly continued (with E28 interiors) until 1984.
The 1970 BMW 2200ti Garmisch show car designed by the Bertone Design Centre led by Marcello Gandini set the style for the E12 5-series. Designed to compete with the Mercedes-Benz W114 sedans, the E12 models were fitted with a variety of engines. 1.8 L and 2.0 L M10 I4 engines from the older Neue Klasse sedans were used in the 518 and 520, respectively. A six-cylinder version of the 520, built with a 2.0 L M20 belt-driven engine was also available from 1977 on (to coincide with the minor restyling). The 525i, 528i, 530i, and M535i, were fitted with M30 six-cylinder engines as used on the large E3 sedans and E9 coupes. With the exception of the 520i, four-cylinder and 2.0 L six-cylinder engines were fitted with Solex carburetors (although in the UK the four-cylinder 520 was fitted with twin Stromberg 175CDET carburettors). The 520i used the mechanical fuel injection system from the BMW 2000tii and BMW 2002tii. Six-cylinder versions were available with dual Zenith two-barrel carburetors or Bosch L-jetronic fuel injection. Fuel-injected models contain the i letter at the end of their model badge. Although BMW had always located turn signal stalks on the right hand side of its steering wheels, the E12 was their first model to have the stalk on the left side.

With the introduction of the BMW E23 large sedan in 1977, the E12 received a minor restyling. The rear-mounted gasoline filler door was relocated to the side of the car and the taillights were widened. The hood, originally designed to clear the large air filter assembly for cars fitted with dual Zenith carburetors, was redesigned to a give a 'power bulge', and the dashboard ventilation was repositioned to improve air distribution.

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