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BMW New Six
                                     

ⓘ BMW New Six

The BMW New Six is a line of full-size luxury sedans and grand tourer coupes produced by the German automaker BMW from 1968 to 1977. All models used the then-new M30 straight-6 engine. It marked BMWs return to the full-size luxury sedan market after a hiatus of 5 years and was introduced as a response to growing market segment dominated by Mercedes-Benz. It was important in establishing BMWs reputation as a maker of sporting, luxury sedans.

The BMW New Six CS also known as the BMW E9 coupe models are built on a shortened version of the E3 platform. The E9 coupes share engines, transmissions, suspension and many other features with the E3 sedans.

A total of 221.991 sedans and coupes were built.

                                     

1. Development

After a long hiatus, BMW decided to develop a six-cylinder car in the early 1960s. Work on what was to become the E3 commenced in 1965. The engine was based on the existing fours, sharing their overall layout while not merely an addition of two cylinders. The design team was led by Wilhelm Hofmeister, with some detail work executed by Italys Bertone and Michelotti studios. A goal was to allow for more passenger space and comfort than what the earlier "Neue Klasse" saloons had been able to offer. The new sedan was noticeably a "drivers car", focusing on the front-seat occupants, and the smaller coupe was only barely a full four-seater.

A new feature was the twin headlights, set into the grille, a design which was to define BMW styling for decades. Early mockups of the E3 featured broad rectangular single headlamps with rounded corners, but these never went into production - perhaps as a result of the lukewarm reception of the similarly designed 2000 CS. The new car also required a new welding plant at BMWs Munich site. In spite of the cars all-new construction it only cost 70 million D-mark to develop. This was less than half of what one might have expected at the time.

                                     

2. Nomenclature

Models were given names denoting their engine sizes, and suffixes to indicate the long-wheelbase L and fuel injection i available on later cars. The coupes were all named CS, followed by i for fuel injection models or L for light-weight models, which also had fuel injection and higher power.

  • 2500/2.5, 2.5CS 2494 cc, 150 PS 110 kW; 148 hp)
  • 3.3Li 3210 cc, 1976-1977
  • 3.0Si, 3.0Li, 3.0CSi 2985 cc, 200 or 195 PS 143 kW; 192 hp, depending whether Bosch D-Jetronic or L-Jetronic was installed)
  • 3.3L, 3.3Li 3295 cc, 190–197 PS 140–145 kW; 187–194 hp)
  • 3.0S, 3.0CS 2985 cc, 180 PS 132 kW; 178 hp using twin Zenith 35/40 INAT carburetors)
  • 2800/2.8, 2800CS 2788 cc, 170 PS 125 kW; 168 hp)
                                     

3. Models

The two initial models, introduced in 1968 and sold through 1977, were the 2.5 L 2500 and 2.8 L 2800. The airy design was roomier than BMWs existing range and appeared rather large, in spite of being no more than 1 cm 0.4 in longer than Mercedes midrange sedans, which were generally considered to compete in a lower class than the new E3. They were large six-cylinder cars that handled well and impressed contemporary reviewers. Road & Track called the later Bavaria "delightful" and "superb", concluding that it was "one of the worlds best buys". Aside from the larger engine, the 2800 also had bigger tyres and a somewhat sportier suspension, as well as various creature comforts such as a heated rear window, a full tool set, Boge Nivomat self-levelling rear suspension, and a smattering more external chrome.

The big-bore, dual-carbureted 3.0 S was introduced in 1971, being a more powerful and expensive model than the 2800; a fuel-injected version was also made. Also produced were long-wheelbase L models, whose sharp handling was a stark contrast to the large Mercedes-Benz models of the time. Langley Motors in Thames Ditton UK also produced an estate tourer version. With a fully independent suspension along with four wheel disc brakes, the E3 was well ahead of its time in the early 1970s. Surprisingly quick, the 3.0 Si sedan was faster than the 3.0 coupe; which was a heavier car by 50 kg, with the same engine configuration.

The body was surprisingly light for its size, weighing less than the smaller E9 coupe. Vision is also good, with narrow pillars and no less than 2.5 m 2 27 sq ft of overall glass area.

At the end of 1973 the new, larger 3.3 L was presented, going on sale in January 1974. It had the longer wheelbase and a bigger engine, although the power was no more than that of the 3.0 Si. Instead, more torque meant to provide a more luxurious rather than BMWs usual sporting feel. This engine was updated to fuel injection in June 1975, with a few more horsepower. Subsequent to the introduction of a 3.2 liter version of this engine in the 1976 BMW 633CSi, this slightly smaller model found its way into the 3.3 Li as well. The E3 Sedan was in production from 1968–1978, with a total of circa 190.000 cars produced. Of these, 71.804 were of the US-only "Bavaria" model.



                                     

3.1. Models North America

In the US market, the 2500 and 2800 were introduced in 1969. The 2500 was shy of many of the luxury features included in the 2800, and with the smaller engine, it sold for about $5600 in 1970. The 2800 offered full leather interior, power windows, and power sunroof, which its price of $6.874 reflected. For the 1971 model year Max Hoffman, the BMW importer for the USA, convinced BMW AG to build the 2500 configuration car but use the 2800 engine - offering more power without the weight an expense of the 2800’s luxury features. This new E3 configuration was called the "Bavaria" and was unique to the US market. Priced at about US$6.000, the Bavaria came to replace both older models. It is generally considered the forebear of the modern BMW high-performance sedan as it combined brisk acceleration, reasonable fuel economy, plenty of room for four people and a large trunk. The majority of them were sold with a four-speed manual transmission, reflecting the sporting nature of the sedan.

For the 1972 model year, the 2500 was dropped while the M30 engine size in the Bavaria was increased to 3.0 liters. The former 2800 was now called the 3.0 S reflecting the 3.0 liter engine. These two models, the 3.0 S and the Bavaria, made up the North American E3 sedan line-up for 1972 through 1974. However, in 1974 the E3 received the ungainly, federally mandated 5 mph 8.0 km/h bumpers front and rear significantly altering its profile.

In 1975 BMW introduced fuel injection to the US market M30 motor, replacing the twin two-barrel Zenith carburetors used since its inception. The Bavaria was dropped from the line-up, nominally replaced by the fuel-injected M30 powered E12 530i, and the fuel-injected 3.0Si became the highest end of the BMW model range. The fully optioned 3.0Si was sold during the 1975 and 1976 model years.

Bavaria Production:

                                     

4. New Class CS E9

The CS coupe models were based on the standard 2800 sedans, and looked very similar from the front. But they were also related to the earlier 2000CS, as is evident at the rear. The first model was the well-equipped 2800CS of 1968. The 3.0CS models introduced in 1971. In 1974 the smaller engined 2.5CS was made in small numbers, in response to the fuel crisis. The CSL models were lightweight racing versions.

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