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BMW E21

BMW E21
is the body designation for the first BMW 3 Series compact executive car, produced by the German automaker BMW from 1975 to 1983. This series was the immediate successor to the BMW 2002 and was superseded by the BMW E30 platform.

Development and early history

Under the direction of its 51% percent shareholder, Herbert Quandt, BMW decided upon a replacement for their aging 2002. Without it, there was the distinct possibility of BMW leaving its core mission of building driver oriented cars, and alienating an existing customer base long enamored with the company's 2002 model.

Paul Bracq, Director of Design at BMW from 1970–1974, is credited with setting the design direction of the E21 3 Series, while Wilhelm Hofmeister is credited with first drawing the small forward wedge at the base of the C-pillar, a strong design trait of the first 3 Series. In 1975 Claus Luthe replaced Bracq and became the owner of the project.

In July 1975, BMW’s Board of Management first presented this new model series in the Munich Olympic Stadium for public appraisal. The frontal view of the new car was dominated by the BMW trademark kidney grille standing out clearly from the radiator cover. The styling of the new car bore a resemblance to the BMW E12 5 Series.

The wedge shape of the two-door model was distinctive, extending all the way to the unusually high rear end. In response to criticism of the tail design, a black plastic trim panel between the tail lights was added. The car's styling was otherwise well received.

Measuring 4355 millimeters (171.5 inches) in length, 1610 millimeters (63.4 inches) in width, and 1380 millimeters (54.3 inches) in height, the E21 Series continued the tradition of the New Class. With the wheelbase measuring 2563 millimeters (100.9 in), there was little body overhang in the rear wheel drive design. The track measured 1364 millimeters (53.7 in) at the front, and 1377 millimeters (54.2 in) at the rear.

The suspension incorporated rack and pinion steering and McPherson strut suspension at the front, and semi-trailing arm type independent suspension at the rear. The power assisted brakes were discs on the front wheels, while the rear wheels had drum brakes.

Initially, a Getrag four-speed manual was the standard transmission fitment. Five-speed Getrag gearboxes were fitted as standard in the 323i and others in later years, but were available at the car's release as an option, with gear ratio sets favoring either performance or economy. Alternatively, purchasers could opt for the ZF 3 HP-22 three-speed automatic transmission.

The cockpit design of the E21 marked the introduction of a new design concept, with the center console angled towards the driver. This feature has become part of BMW’s interior design philosophy for many years. As a sign of passive safety, all edges and control elements within the interior were rounded off and padded.

At the E21's release, three models were available: with 316 (1.6 litre), 318 (1.8 litre) and 320 (2.0 litre) versions of the BMW M10 four cylinder engine. To draw clear visual distinction within the new model series, the 320 models came with dual headlights, while the 316 and 318 had single round headlights.

At the end of 1975, the 320i was introduced; the engine was fitted with Bosch K Jetronic fuel injection, delivering 125 bhp (93 kW) on premium grade gasoline.

At introduction in the German market, the entry-level 316 retailed at DM 13 600, the 318 sold for DM 14 420, and the two 2.0 L models went for DM 15 330 and DM 17 400 respectively.

Ongoing evolution

In the mid 1970s, BMW had invested DM 110 million in a new engine series, designated as the M60, but later renamed as M20 upon the introduction of the E30 in late 1982.

At the 1977 International Auto Show in Frankfurt, BMW unveiled its new variants of the E21, featuring the new six-cylinder M20 engines. The four cylinder 320 model was replaced with the 320/6, featuring a two litre version of the M20 engine. The 323i model was introduced, featuring 2.3 litres and 143 bhp (107 kW; 145 PS), empowering this car with a top speed of approximately 190 km/h (118 mph). The braking system was also upgraded, with the 323i featuring disc brakes on all wheels.

In the meantime however, a performance gap had developed between the 98 bhp (73 kW; 99 PS) 318 and the new 320/6 delivering 122 bhp (91 kW; 124 PS). For the 1979/80 model year, the four-cylinder models were upgraded: the 1.8 litre power unit was revised and entered the market as a 90 bhp (67 kW; 91 PS) carburetor engine in the 316, while addition of Bosch K Jetronic fuel injection to the 1.8 litre engine raised the 318i to 105 bhp (78 kW; 106 PS) .

Since there was now also room for a new entry-level model, the 315 powered by a 75 bhp (56 kW; 76 PS) 1.6 litre M10 engine made its appearance in 1981.

Sales

A European study conducted by BMW in 1980 showed that with a share of 31 percent, the 320i was the best-selling 3 Series, followed by the 316 accounting for 27 percent, the 318 with a share of 24 percent, and the 323i with a share in sales of 18 percent. Reasons quoted for buying the car were: the car’s performance, in 77 percent of all cases; its handling, for 65 percent of the customers; and the special looks of a sporting saloon, for 64 per cent of buyers. Most E21 owners were satisfied with their purchase, as almost two-thirds of those surveyed stated that their next car would be another BMW.

Another inquiry showed that drivers of the E21 Series were particularly active motorists by European standards, with more than 60 per cent of those surveyed covering more than 17 000 km (10 500 miles) per year.

In May 1981, six years after the start of production, the millionth 3 Series came off the production line. Worldwide sales of the E21 topped 1.36 million at the end of E21 production in 1982, although the E21 version was not particularly popular in the lucrative United States market.

It was a reasonably popular car in Britain, and helped increase the popularity of "compact executive" models. By the end of its production life in 1983, the E21 was competing fiercely in a market with the likes of the Audi 80 and the new Mercedes-Benz 190E.

Gallery

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