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Porsche 928 buying guide (1977-1995)

Porsche 928 front Porsche 928 side Porsche 928 rear Porsche 928 engine Porsche 928 interior If there can be such a thing as a ‘forgotten Porsche’, the 928 is it. Although built for a remarkably long period – about 17 years – it’s not a car you read much about in the classic press. And yet the 928 is quick, extremely comfortable and has a big V8 under the bonnet. What’s not to like?

‘Thirst and complexity’ are the usual retorts. It’s true that 20mpg is a best-case scenario for any 928 – but with most of the survivors now being kept as second cars, that’s less of an issue. And while there seems to be an awful lot of engine shoehorned under the bonnet, it’s really a straightforward design that can rack up enormous mileages.

Of course, the 928 was an expensive car when new, with commensurately high servicing bills. But today’s non-franchised specialists charge more reasonable prices and there are plenty of secondhand parts around – sadly, good cars are still being stripped out for track day or race use.

Despite its recently discovered potential as a race car, the 928 was always marketed as a GT and about 80% were sold with automatic transmission. Manuals are now sought after for track days, but the 928’s big V8 is ideally suited to an auto ’box and gives a relaxing drive.

MARKET VIEW

You won't hear a bad word said among 928 owners about Paul Anderson. He has been specialising in the cars for the past ten years, and race-prepping them for six – as a 1970s model, the 928 is fast catching on among the historic race and rally crowd.

‘928s are definitely on-the-up at the moment,’ he says, before adding: ‘…but prices are lower than they were four years ago. Interest goes in peaks and troughs, and it’s the current price of fuel that dictates values.

‘Condition is more important than model or year. A superb car, early or late, might be £15,000 but good examples start at around £5000, slightly less for an S2. A GT will be at least £6000-6500 and the GTS £8000 upwards.

‘That said, you can pick up a 928 for much less if you’re lucky. One of our customers recently bought a tidy 928S for a grand…’

IN A NUTSHELL

First, the good news: the 928 bodyshell was galvanised right from the start of production, so structural rust is rare. Early cars will typically show the odd bubble around rear windows or hatch (where trim clips have broken the galvanising), but usually corrosion is restricted to paint scabbing on the alloy bonnet, front wings and door skins.

Mechanical parts also last well. Cambelt failure is the biggest danger: on 4.7-litre and later engines the valves can then collide with pistons (4.5s aren’t affected). The belt should be changed every four years/60,000 miles; it’s wise to renew the water pump at the same time, which accounts for over half of the c£500 that a specialist will charge.

The 928’s suspension hardly changed during production: ‘You could, in theory, fit GTS suspension to a 1970s car,’ claims Paul Anderson. OE -spec dampers are now hugely expensive but Paul offers a set of specially produced gas-filled units for £700.

The 928 has its gearbox mounted just ahead of the rear diff, and it’s connected to the engine by a torque tube. Manual ’boxes don’t have the sweetest changes but are tough, while the automatics are Mercedes-Benz units, so very reliable. However, failure to check the flex plate tension regularly can lead to a worn crank thrust bearing and, ultimately, a wrecked engine block.

928s do suffer electrical gremlins if not driven for any length of time – ‘but the wiring is actually quite easy to trace,’ says Paul – while air-conditioning will rarely work on an older car and may cost £500-600 to repair. Interiors last pretty well but the 1970s pyschedelic-check trim known as Pascha eventually falls apart at the seams; it’s hard to find, even secondhand.

CONCLUSION

Chances are that if you fancy a 928 you’ll already know what you want: either the design statement of the original car (no spoilers, no side strips, Pascha interior, telephone-dial alloys) or the sheer speed and greater luxury of the S4-and-later models. Buyers tend to fall into one or other camp.

The late-’70s cars are by far the rarest now and are the only 928s likely to have any longterm investment potential. They are not particularly fast by modern standards but they’re the simplest and cheapest to run.

Moving on a few years, a 1980s S or S2 still has a certain period appeal, retaining the egg-shaped rear of the original car. With decent examples available from £2500, they’re amazing value. Among the restyled cars, the S4 is the sensible buy – ‘its engine is bulletproof,’ says Paul Anderson – while the GTS is the most hardcore and most expensive to fix, having unique brakes and engine.

Buying any older high-performance car is a gamble. But one thing’s for sure: petrol is never going to get any cheaper…

MODEL HISTORY

1977-1982: 928 launched with new water-cooled, 4.5-litre V8 engine giving 240bhp and 140+mph top speed, five-speed manual or three-speed auto transmissions.

1979-1984: 928S gains bigger, 4.7-litre engine, plus small front and rear rubber spoilers and side-protection strips. Power now 300bhp and top speed 152mph.

1984-1985: S2 has 310bhp; auto option now a four-speed.

1985: US-only cars gain new 5-litre V8 with DOHC , four-valve heads and unofficial ‘S3’ title.
1986-1992: S4 restyled with smoother front end, wraparound tail-lights and big rear spoiler. 5-litre V8 already used in States gives 320bhp. Digital dash and auto ’box standard for ’89-on S4. 

1989-1992: Manual-only GT introduced with stiffer suspension, wider wheels and 326/330bhp.

1992-1995: GTS has 5.4-litre V8, 340bhp and ‘Cup’ alloy wheels.
Porsche 928 front Porsche 928 side Porsche 928 rear Porsche 928 engine Porsche 928 interior
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Porsche 928 cars for sale

7 Search results
Porsche 928
14036 89995 GBP
  • metallic black, sand beige leather interior with black carpets, full electric seats, cruise control, on board computer, 17inch cup alloys, cup mirrors, electric sunroof, full service history - all mot certificates from 2000, recent cam belt and water pump replacement

    • Year: 1995

    • Last update: 2 days old

    • Mileage: 65000 mi

    For sale
  • Strasse
    0113 2340 911
    see details
  • Make: Porsche Model: 928 GTS First Registered: 13/05/1994 (L) Mileage: 76,100 Miles Previous Owners: 7 Engine: 5.4 Ltr Transmission: Auto Paint Colour: Red Trim Colour: Black Carpet Colour: Black Doors: 2 Seats: 2 MOT: 12 Months TAX: TBA HPI: Clear Warranty: 3 Month Cover Included - Upgrades Available

    • Year: 1994

    • Last update: 24 days old

    • Mileage: 76100 mi

    For sale
  • The Supercar Rooms
    01299 666116
    see details
  • £21,995 £21,995

    Under the bonnet, the 5.4 litre 32V Porsche V8 is a work of art, nestled between the front wings and presents beautifully for its age. Furthermore the 4-speed automatic gearbox feels smooth to operate, pulling through the gears precisely and handling the engines power perfectly.

    • Year: 1993

    • Last update: 4 days old

    • Mileage: 109879 mi

    For sale
  • 4 Star Classics
    01483 274347
    see details
  • Porsche 928 GTS 5.5 V8 Exceedingly Desirable 5 Speed Manual finished in Midnight Blue with Full Grey Perforated Leather Interior registered September 1993, One Owner from New, Supplied by AFN Porsche Guildford as Static Demo, Full Brand New Engine Fitted 1,600 miles ago along with Brand New Discs and Pads All Round, 17 Inch 5 Spoke Alloy Wheels with Black Brake Calipers, Electric Seats, Burr Walnut Trim and Door Cards, Leather and Burr Walnut Steering Wheel, Rear Wiper with Heated Rear Windscreen, Electric Tilt and Slide Sunroof, Cruise Control, Electric Windows, Leather Headlining, Electric Door Mirrors, ABS, PSD Limited Slip Differential, Space Saver Spare Tyre, Original Toolkit and Warning Triangle, Porsche Service and last serviced at Porsche Alicante on 20/08/14 at 70,495 KMs. Finance available on request - subject to status. Ask about our Company Directors packages. Fully Valeted; 12 Months MOT; UK Wide Delivery Available; Part Exchange Welcome.

    • Year: 1993

    • Last update: 7 days old

    For sale
  • Targa Florio
    01243 641117
    see details
  • £14,036 £14,036

    (from Wikipedia, the free encyclopedia) The Porsche 928 is a sports-GT car that was sold by Porsche AG of Germany from 1978 to 1995. Originally intended to replace the company's iconic 911, the 928 combined the power, poise, and handling of a sports car with the refinement, comfort, and equipment of a luxury sedan to create what some Porsche executives thought would be a vehicle with wider appeal than the compact, quirky and sometimes difficult 911. Since its inception in 1949, Porsche has manufactured only six front-engined models, four of which were coupes, including the 928. The car has the distinction of being the company's only coupe powered by a front-mounted V8 engine, and the company's first mass-produced V8 powered model. By the late 1960s, Porsche had changed significantly as a company, and executives including owner Ferdinand Porsche were playing with the idea of adding a luxury touring car to the line-up. Managing Director Ernst Fuhrmann was also pressuring Ferdinand to approve development of the new model in light of concerns that the current flagship model at the time, the 911, was quickly reaching its maximum potential where it could soon no longer be improved upon.

    • Year: 1983

    • Last update: 1 day old

    For sale
  • Oldertimerfarm.be
    0032472401338
    see details
  • This limited ownership Porsche is in excellent running and driving condition, with working A/C. A very original unmolested car that has been well maintained, with its stickers all in the original placement, and is a desirable model. It has good body fit, is rust free, and is equipped with several options such as an electric sunroof, power windows, door locks, and seats. The entire clutch system was replaced along with the brakes at 106K miles, and have less than 2k miles of wear. At that time, a full review was done of the car, and all fluids were changed. The tires have less the 6k miles wear on them with plenty of life left. All receipts will accompany the purchase (going back as far as 1991) as well as the shop/owner manual with service stamps from new. All tools are present except 1 wrench from rear kit, and the dash is 100% original. This Porsche is surely one to become a favorite for weekend drives or as your daily driver.

    • Year: 1988

    • Last update: about 1 month old

    • Mileage: 108189 mi

    For sale
  • Classic Showcase
    (760) 758-6100
    see details
  • £16,950 £16,950

    Originally supplied by AFN Porsche and maintained solely by them since to the full UK C16 specification. One previous owner and just 51,000 miles since new. The car has a fabulous supporting history file. The owner, being a hotelier in London, owned the very hotel where Dr. Porsche would stay on his visits to the UK. Featuring: This must be one of the finest original early 928′s in existence.

    • Year: 1980

    • Last update: 16 days old

    For sale
  • Sussex Sports Cars
    01273 477 778
    see details
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