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Porsche 928: Buying guide and review (1977-1995)

Porsche 928: Buying guide and review (1977-1995) Classic and Performance Car
Porsche 928 Porsche 928 Porsche 928 Porsche 928 Porsche 928 Porsche 928 Porsche 928
We’ve said it before, and we’ll undoubtedly say it again: The Porsche 928 is a great car. Undervalued for years, this highly accomplished GT has lived in the shadow of its smaller and (admittedly) more exciting 911 sibling since it was launched.
Designed to replace the aging 911, Porsche spent a lot of time and money making sure that this front-engined, V8-powered coupe would blow the world away. It was an engineering masterpiece, and was such a groundbreaking effort that it actually took the 1978 European Car of the Year award. 
The problem is, Porsche had built the ultimate grand tourer – not an out-and-out sportscar. Traditional 911 buyers simply weren’t interested, but as a comfortable, great looking and fast continent crusher it was almost unbeatable.
So advanced was this Porsche at launch, the 928 remained in production – basic design effectively unchanged – for around 17 years. Of course the 928 evolved over the years with added spoilers, more equipment and and more power, but the basic formula of quick and comfortable ability remains a constant through the range. 
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 racing car, the 928 was always marketed as a GT and about 80 per cent 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. 

Which 928 to buy?

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 long term 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. Among the restyled cars, the S4 is the sensible buy – as its engine is bulletproof – while the GTS is the most hardcore and most expensive to fix, having unique brakes and engine. 

Performance and specs

Engine 4474cc, 16-valve SOHC V8
Power 237bhp
Torque 268lb ft
Top speed 142mph
0-60mph 7.5secs
Fuel consumption 21mpg
Gearbox Five-speed manual/Three-speed automatic

Dimensions and weight

Wheelbase 2500mm
Length 4448mm
Width 1836mm
Height 1313mm
Weight 1451kg

Common problems

• 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. Accident damage is obviously where trouble can start, and even a proper repair from 10-15 years ago can start to show its age.
• 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 or 60,000 miles. It’s wise to renew the water pump at the same time. 
• When the GTS was launched, a number of engines suffered from excessive oil consumption due to porous cylinder liners. Many cars had new engines from Porsche, however if the car you’re looking at wasn’t one of them, ask the owner about oil usage. If it uses an excessive amount today it could spell big bills in future. 
• The 928’s suspension hardly changed during production, which means that you could, in theory, fit GTS suspension to a 1970s car. OE-spec dampers are now hugely expensive, although specialists do offer aftermarket sets for considerably less. 
• 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. Make basic checks on the operation of the electric windows, mirrors, seats, headlights and central locking, as these could be costly to rectify if paying a specialist. 
• 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. While good condition second hand items are nearly impossible to find, reproduction fabric is now available through specialists. 

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.

The rivals

Jaguar XJ-S – If you want a great-looking GT, the XJ-S is right up there with the 928 for style. This British choice is less unreliable than you might think, but the repair costs of a poorly maintained example (of which there are many) can be even more eye-watering than the Porsche. 
BMW M635CSI – Perhaps lacking the drama of the Porsche’s stunning aesthetic, this big BMW coupe is perhaps more of driver’s choice. That’s not to say it doesn’t look great! 
Mercedes-Benz 560SEC – Comfort and speed don’t come much more easily than in the big Benz, and if you like toys this is the car for you. This was the most expensive car Mercedes built at the time, and as well as offering fantastic luxury it’s beautifully built. 
Ferrari Mondial – This four-seater Ferrari might be a little unloved, but at the end of the day it’s still a Ferrari…

Owners clubs, forums and websites

• www.928.org.uk – Porsche 928 community
• www.porscheclubgb.com – UK-based Porsche owners club
• www.porscheownersclub.org.uk – Free to join UK Porsche club
• www.tipec.net – The Independent Porsche Enthusiasts Club

Summary and prices

Porsche 928 prices have been generally very steady for the past decade, with a very gentle upward trajectory for the most desirable examples. To some extent, the condition is more important than model or year. A superb car, early or late, might sell for up to £30,000, but good usable examples start at around £10,000. 
Very early cars start from around £4000 for something needing work (although projects can still be picked up from upwards of £2000), with the later models becoming more expensive as the power and spec levels increase. The advice is to steer clear of anything too cheap, as the potential bills associated with these will often be substantial. 
The most valuable is the high-performance GTS model, with prices usually starting from £15,000-£25,000. Perfect examples, especially with low mileages, are often advertised at more than £60,000.
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Last updated: 8th Mar 2017
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Porsche 928 cars for sale

14 Search results
Porsche 928
10995 42900 GBP
  • Porsche - 928 S - 1982

    €18,000 - €23,400 est. (£15,584.40 - £20,259.72 est.) €18,000 - €23,400 est. (£15,584.40 - £20,259.72 est.)
    Online Auction
    Auction Date: 01 Jan 1970
    Catawiki Auctions
  • Porsche 928 5,0 S4

    €14,900(£12,900.42) €14,900(£12,900.42)

    Porsche 928 5,0 S4 Equipment: Super fed Pick Up perfekt som reklame til firmaer Synet 2016 1 ud af 8 producerede i Danmark sælges engros ring for info. Indregistreret som varevogn

    • Year: 1988
    For sale
  • Porsche 928 GTS Manual


    Porsche 928 GTS 5.4 32V V8 5 Speed Manual registered September 1992 finished in Guards Red with Full Grey Perforated Leather Interior, 17 Inch 5 Spoke Alloy Wheels with Black Brake Calipers, Semi Electric Seats, Rear Wiper with Heated Rear Windscreen, Electric Tilt and Slide Sunroof, Cruise Control, Air Conditioning, Electric Windows, Leather Headlining, Leather Gear Lever, Electric Door Mirrors, Headlamp Jet Wash, ABS, Porsche Stability Management, Spare Tyre, Original Toolkit and Warning Triangle, Top Tinted Windscreen, Leather Steering Wheel, Stainless Steel Tailpipes, Door Entry Guards with Red GTS Logo, Front Fog Lamps, Active Carbon Filter, PAS, On-board Computer, Central Locking, Remote Locking Alarm and Immobiliser, Porsche and Specialist Service History at 3,323 on 28/01/93; 5,515 on 11/08/93; 11,712 on 09/11/94; 16,049 on 12/09/95; 21,253 on 22/08/96; 22,545 on 11/07/97; 29,338 on 18/08/98; 30,963 on 15/01/99 with Camshaft Belt Change; 35,128 on 09/02/00; 39,171 on 10/11/00; 45,822 on 14/03/02; 49,478 on 03/03/03; 55,015 on 29/11/04; 60,176 on 20/10/05; 66,277 on 19/01/10 with Camshaft Belt Change; 68,025 on 23/02/11; 72,957 on 24/07/13; Air Conditioning Compressor Replac

    • Year: 1992
    For sale
  • Porsche 928 S Coupe 1987


    Porsche 928 S Coupe version V8 1987 in very good condition 1987 Porsche 928 S Coupe. Both the body and interior are in a very beautiful condition. Paint in the colour champagne metallic and the optional full leather brown interior. This german sportscar was specially built. The aluminium water cooled 4664 CC V8 engine was built in the front of the car and the automatic gearbox was above the rear axle. This for better weight division. The car has electric adjustable seats, electric windows and sunroof. So a very beautiful, very luxurious and excellent driving Porsche 928. Car has Holland title and Holland mot/tuv. Easy to register in every EU country. You do not need to pay any importtaxes. We can help with transport.

    • Year: 1987
    For sale
  • 1981 Porsche 928

    $42,900(£34,397.22) $42,900(£34,397.22)

    The Porsche 928 was developed in the late 1970’s as the flagship and the heir to the throne of the of the Porsche dynasty. With a 4.5 liter front mounted V-8, the car was a startling departure from its earlier rear engined siblings. These cars exuded quality, from the amazing engineering to the sublime handling and performance; in its day, there was nothing that could compete with the 928 as an autobahn cruiser. These cars are fast appreciating, and are sure to be in the next generation of collector cars. This 20,500 mile, one owner car checks all of the boxes for collectibility. The car left the Porsche factory on September 11, 1981 and was delivered to Rexcoat Porsche Audi of Illinois. Driven only 20,500 miles, she remains in time capsule condition. The Chiffon White paint is gorgeous, with only the occasional chip. The interior is original with the exception of the radio. The Beige leather is soft and supple with almost no wear and the carpets and headliner are likewise in wonderful condition. The 4.5 liter aluminum engine starts and runs well with good horsepower and torque. The 5-speed manual shifts well and the clutch engages with authority. The car has been well maintained;

    • Year: 1981
    • Mileage: 20000 mi
    For sale
  • Porsche 928 4.7 S Series 2


    Grand Prix white, Black leather/logo interior. This is an unusual but quite special car that has spent most of the last 15 years in storage. There have only ever been 2 owners, both of which lived within a few miles of each other around Leatherhead, which explains why the car only ever visited Porsche Guildford, the nearest main dealer. + + + Eporsch has carried out a recommissioning over the last few months including cambelt replacement, all major servicing aspects have been brought up to date including replacement of all oils & fluids, all four tyres have been replaced, various bodywork repairs have been carried out to address the minor defects picked up over the years, and various minor mechanical issues resolved. + + + There is an original stickered service book, showing delivery to AFN Guildford and 17 service stamps, all of which (except the last) was carried out by AFN (or Porsche Guildford [...]

    • Mileage: 29000 mi
    For sale
  • Porsche 928 GTS RARE 5 SPEED MANUAL


    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
    For sale
  • 1988 Porsche 928 S4 Coupe


    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
    • Mileage: 108189 mi
    For sale
  • Porsche 928

    £19,000 £19,000

    This Low mileage 928 S4 is presented in Guards Red with cream leather. 73,000 miles with a Full service history, Porsche tool kit / Tyre Gauge and spare wheel all present. Pristine condition.

    • Year: 1990
    • Mileage: 73000 mi
    • Engine size: 5.4
    For sale
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