Volkswagen K70

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Volkswagen K70
Manufacturer	Volkswagen
Production	1970–1974
Predecessor	none
Successor	Volkswagen Passat
Class	Mid-size car
Body style(s)	4-door sedan
Layout	FF layout
Engine(s)	1.6 L I4, 75-90 DIN hp 1.8 L I4, 100 DIN hp
Wheelbase	105.9 in (2690 mm)
Length	174.0 in (4420 mm)
Width	66.3 in (1684 mm)
Height	57.1 in (1450 mm)
Curb weight	2340 lb (1061 kg)-2430 lb (1102 kg)

The 1973 facelift involved replacing the rectangular headlights: this distanced the car a little from its NSU origins.

The Volkswagen K70 (pronounced as "ka siebzig" in German) is a sedan automobile developed by NSU and sold by Volkswagen from 1970 till February 1975. The K70 was the first VW to have a front-mounted watercooled engine.

[edit] Development as an NSU

Designed by Claus Luthe, the K70 was originally developed by NSU as a smaller brother to the more famous Ro 80, the main difference being that the K70 used a conventional piston engine instead of the Ro80's more complicated Wankel rotary engine. The name "K70" referred to the fact that the engine had a power output of 70 hp (52 kW), the "K" denoting the German word "Kolben", meaning piston.

[edit] Postponed launch as a Volkswagen

NSU scheduled the car's press launch for March 1969, intending to present it to the wider public at the Geneva Motor Show of that year. However, just as the car was about to be launched, well founded rumors appeared concerning the then imminent take over of cash strapped NSU by Volkswagen: even before the take over had been made public, the K70's future was threatened by management concerns that the K70 was too close in size and price to the recently launched Audi 100. Plans for the K70 launch were at the last minute deferred, with rumors that Volkswagen personnel removed the K70 from NSU's show stand on the eve of the show: during 1969 the Neckarsulm company found itself integrated with Auto-Union/Audi, which Volkswagen had acquired in 1964.

VW was nevertheless in desperate need for a new family sedan to replace the commercially unsuccessful Type 4, which itself had been intended as a move upmarket for the Beetle based cars. Thinking that the K70, featuring front wheel drive and modern styling, was the perfect way to transform its image, the Wolfsburg firm quickly scrapped publicity material showing the K70 badged as an NSU, and just over a year later the sedan instead went into production not at Neckarsulm, but at Volkswagen's new Salzgitter plant. Now branded as a Volkswagen, the K70 finally started coming of the production line with little fanfare in August 1970, and was launched in export markets during the ensuing months. A launch date for the wagon / estate version, already delayed, was further deferred - indefinitely as it turned out.

[edit] Engine and transmission

The K70 as launched featured a four cylinder water cooled engine: this was a development from the four cylinder engine mounted in the rear of the NSU 1200, its displacement increased to 1605 cc. Despite reports that the car's name reflected an output of 70 horse power, the car at launched boasted a claimed 75 bhp. The engine was longitudinally mounted, well forward and placed directly above the differential, between the front wheels, and canted to the right. The clutch and gear box were directly behind the differential, and the three comprised a compact package which necessitated a relatively high bonnet / hood but which also maximised the proportion of the car's weight carried by the front wheels, and the space available for passengers and their luggage, characteristics that the K70 shared with the NSU Ro80. Despite this arrangement, accessing or replacing the clutch was possible, using a service ramp, without any need to move the engine or gear box.

Although the look of the K70 was modern, the performance from the engine, especially on the entry level 75 bhp versions, was merely adequate. Comparison with the 411, which by 1970 had acquired an enlarged engine and fuel injection, was and is hard to avoid. Neither of VW's family middle weight sedans topped the charts for top speed and acceleration, nor for fuel consumption, and the K70's indifferent fuel consumption became an increasingly pressing issue because the car's production run coincided with the 1973 oil price shock. The introduction during 1973 of an 1807 cc version with a claimed 100 bhp addressed the most acute performance concerns. The final K70s did out accelerate the final 412s, and had a higher maximum speed. But in respect of fuel efficiency, the air-cooled model - at least in manual transmission guise - retained a useful advantage till the end.

[edit] The body

Unfashionably tall by contemporary standards, the K70 also benefited from the space saving characteristics of its front wheel drive layout and compact engine installation. The boxy cabin was unusually spacious and the luggage capacity class leading. The driver sat slightly higher than in competitor vehicles and the large window area conferred above average all-round visibility.

The 1960s was a decade when forward looking manufacturers were highlighting secondary safety features. Those on the K70 included a fuel tank mounted directly over the rear axle, ahead of the trunk / boot. As publicity for the Mercedes-Benz S Class would stress when that car was launched in 1972, this was the least vulnerable position in terms of the risk of the fuel tank being punctured in the event of a crash. The steering column was angled in order to reduce the risk of its being pushed too far back into the passenger cabin, and while seat-belts were an optional extra at least on the domestic market, mounting points for them were standard.

[edit] Commercial

For the Volkswagen dealership network, their staff trained over many years to promote and service rear engined air cooled cars, the appearance at relatively short notice of the water cooled front engined K70 represented a challenge. Although the car was priced below the Audi 100, there was an unavoidable overlap in the market place with the Volkswagen 411. Despite the different badging, some potential buyers may have tarred the K70 with the same brush as its unreliable Ro80 sister car, leading to poor sales. The K70 was replaced in 1973 by the Audi-based Volkswagen Passat.

In total, Volkswagen had produced 210,082 K70s before the car was withdrawn from sale in February 1975.

[edit] Data

[edit] References

• This article incorporates text translated from the corresponding German Wikipedia article as of 2008-04-16.

[edit] External links

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Volkswagen K70