Porsche 928GTE

Built as a one-off prototype in 1988, the Porsche 928GTE (or Gran Turismo Executive as it was later named by the factory as an afterthought) was mechanically based on a Club Sport but fitted with a high-end luxury interior and a 360+ bhp engine. Few people seem to know about this car, but it is well documented. The bodywork was also unique and embodies very aggressive ground effects-style aerodynamic components. This car boasts the highest horsepower engine ever fitted to a 928 by the factory, exceeding even the much later (1992-1995) GTS cars fitted with the larger displacement 5.4L engine which made 345hp at the end of its production run. The exhaust note is unforgettable, and the brakes and handling seem superior to any other 928 model. The close-ratio gearbox seems perfect for roadracing. The closeness of the gear ratios are exaggerated somewhat by the engine's ability to pick up revs very quickly, regardless of load. The paradox is that the car has amazing top speed capability, and indicated speeds well above 300kph under controlled conditions are easily attained. This increase over the other 928 models is probably due to the combination of less weight, higher horsepower and the enhanced aerodynamics of the special factory bodywork. The car is driven very seldom due to its rarity and historical significance, and it is kept just the way it was when originally acquired from the factory. It is obviously impossible to duplicate.

See Wikicars' comprehensive  Review.

Unique Attributes

 * All components were made by (or for) Porsche themselves. The bodywork is also unique to this specific car, as are the "928 GTE" and "CLUB SPORT" markings on the rear bumper, which are actually factory-supplied graphics. The distinctive front and rear clips are very different to other 928 models.


 * C00: No delivery; Germany. Not intended for or built as a customer car.
 * 018: Sport steering wheel, black leather, red stitching
 * 139: Seat heating system
 * 298: Catalyst together with manual transmission
 * 326: Radio Blaupunkt Berlin IQR 88
 * 383: Sport seat left, electrical vertically adjustable
 * 387: Sport seat right, electrical vertically adjustable
 * 650: Electrical sliding roof


 * As with the Club Sport models, some of the standard S4's features were deleted in order to reduce weight, as was the case with the limited run "SE" cars. Examples include the rear airconditioner hardware, underbonnet soundproofing and the forward-rearward electric seat adjustment motors.

Technical Details

 * Version : 928 S4 Club Sport, GTE (One-off Prototype). GTE was an abbreviation for Gran Turismo Executive; the name was assigned by the factory and the badging seen on the car was produced specifically for it at the factory.
 * Model year : 1988
 * VIN : WP0ZZZ92ZJS841486
 * Engine number : M28/41 81J 00925 (SP). This engine was a unique development for this specific car and is rated well in excess of 360hp.
 * Colour : Indischrot
 * Colour code : L80K
 * Interior : Black leather, with red piping and black/red tennis cloth inserts. This interior is specific to this car.
 * Date of factory roll out : 1988
 * Mileage : +/- 50 000 km

Criticisms
See Rennlist Porsche 928 Forum Discussion

Worldwide
Only one example of this car was ever built. It is VIN #WP0ZZZ92ZJS841486 and the engine number is M28/41 81J 00925SP (SP=Speziale).

A search of the VIN using www.autoatlanta.com 's online VIN decoder reveals this information:

Model year: 1988 Model ID: 928 Engine Code KW HP Liter Cylinders Model M28.41 235 320 5,00 8 928 S4/CS M637

Transmission Code: G28.12

Options found on your vehicle. Option Code Description M650 Electrical sliding roof

The following codes were found, but the description may not be accurate. Option Code Possible Description I383 Vertical seat adjustment, right I387 Carrera GT bucket seat xt, right

We were not able to find definitions for any codes below this line. I018 I139 I298 I326

Design quirks and oddities
The front and rear bodywork treatments are unique to this specific car, providing a more aggressive look to the more typically more rounded 928s.

Awards

 * The Porsche 928 was voted Car Of The Year in 1978, but that was a very different 928 to this one.