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Porsche 928 car check

Find out if a Porsche 928 has outstanding finance, has been written off or stolen, how many owners it’s had, and which known problems apply to the generation you’re looking at.

Finance, stolen, write-off and owner history data provided by Experian. Results in under a minute.

Known problems
5across 928
Full report
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Which 928 are you looking at?

Each 928 generation has its own weak spots. Here are the known problems.

  1. Brake hose corrosion and ferrule failure

    Safety risk 928

    MOT data shows 928s fail brake hose ferrule corrosion tests at 4.9 times the national average. The ferrules (metal crimped ends of flexible brake hoses) corrode due to the car's age and exposure to road salt. When ferrules fail, brake fluid pressure is lost and the brakes become ineffective. This is a critical safety issue.

    What to check: Visually inspect all flexible brake hoses at each wheel and check the ferrules (metal crimped ends) for corrosion, cracking, or swelling. Look for any signs of brake fluid weeping around the ferrule connections. Check brake fluid level in reservoir - a low level may indicate external leakage. Exa...

  2. Timing belt failure and valve damage

    Safety risk 928

    The 928 uses an interference V8 engine where timing belt failure causes catastrophic valve and piston damage. The rubber timing belt deteriorates with age and mileage, and failure without warning is documented across all 928 variants. Due to the car's age, many have exceeded recommended replacement intervals multiple times.

    What to check: Request documentary evidence of timing belt replacement within the last 4 years or 60,000 miles. If no evidence exists, assume the belt is overdue and factor major engine rebuild costs into purchase. Look for any frayed belt visible through the timing cover inspection windows.

  3. Wheel bearing failure at high mileage

    Wear item 928

    MOT data shows 928s fail wheel bearing tests at 9 times the national fleet average, particularly on high-mileage cars. The combination of the car's weight, age, and performance driving history puts exceptional stress on the bearings. Failure typically occurs on the rear axle first due to the transaxle configuration placing more weight over the rear wheels.

    What to check: Jack up each corner of the car and grab the wheel at 12 and 6 o'clock positions. Rock it firmly - any movement indicates bearing wear. Spin each wheel by hand and listen for grinding or rumbling noises. Check for any visible grease leakage around the hub area.

  4. Excessive fluid leaks from engine and transmission

    Engine damage risk 928

    MOT data shows 928s fail environmental fluid leak tests at 8 times the national average. The V8 engine and automatic transmission develop multiple leak points as seals age. Common sources include the rear main seal, transmission oil cooler lines, and automatic transmission case. These cars were designed when oil consumption and minor leaks were considered normal.

    What to check: Examine the ground under the car after it has been parked overnight. Look for dark oil spots or reddish transmission fluid. Check the engine oil level on the dipstick - these engines consume oil by design but excessive consumption indicates seal failure. Inspect visible hoses and connections arou...

  5. CV joint boot deterioration and failure

    Wear item 928

    MOT data shows 928s fail CV joint boot tests at 3.7 times the national average. The rubber boots protecting the constant velocity joints crack and split with age, allowing dirt and water to contaminate the joint grease. The 928's rear-mounted transaxle configuration means the driveshafts are longer and work at greater angles than conventional layouts.

    What to check: Visually inspect the rubber boots at both ends of each driveshaft for splits, cracks, or missing sections. Look for grease that has been flung out around the wheels or suspension components - this indicates boot failure. Check that boot clips are secure and not corroded through.

Check the 928 you’re buying

One report covers outstanding finance, write-offs, theft and previous owners from Experian, plus MOT history, mileage and the known problems for its generation.

Finance, stolen, write-off and owner history data provided by Experian.

What the check includes

928 questions

What are the main problems with a Porsche 928?

The most serious known issues are brake hose corrosion and ferrule failure, timing belt failure and valve damage, wheel bearing failure at high mileage. Our car check flags whether a specific 928 has been written off or had insurance claims linked to these faults.

How do I check if a Porsche 928 has outstanding finance?

Enter the registration on this page. We query Experian’s finance database and return any outstanding agreements within a minute. If finance is still owed, the finance company can legally repossess the car even after you’ve paid the seller. At £7.49 it’s the cheapest way to avoid a car that isn’t legally for sale.

How do I check if a Porsche 928 has been written off?

Our check queries Experian’s insurance write-off database for Cat A, B, S and N markers. A Cat S or N 928 has been structurally or non-structurally damaged and repaired. This doesn’t mean it’s unsafe, but it affects resale value and some insurers won’t cover it. The check costs £7.49.

Can I check a Porsche 928 for free?

You can check MOT history free on GOV.UK, which shows past test results and advisories. What it won’t show is outstanding finance, write-offs or theft markers, which are the things that actually cost you money after you’ve bought. Our full check adds all of that for £7.49, using Experian data.

Is a Porsche 928 HPI check worth it?

HPI is one brand of car check. Our check uses the same Experian data covering finance, stolen, write-off and keeper history, plus MOT analysis and known 928 faults that HPI doesn’t include. At £7.49 it’s typically less than half the price of an HPI check.

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Finance, stolen, write-off and owner history data provided by Experian. MOT data from DVSA. Known problems from GetCarWise analysis. Updated October 2026.