It Drives Fine and the Service Book Is Full. Should I Buy It?

That is how most pre purchase inspections get booked. The car looks good, the test drive went well, the book is stamped, and the buyer just wants somebody to confirm what they already believe.

A full service book is a good sign. It is not the same thing as a good car, and on a European car the gap between those two can be an expensive one.

What does a stamped service book not tell you?

It tells you somebody did something at roughly the right intervals. It does not tell you what: which oil went in, what was skipped, what fault was cleared rather than fixed, or which repair was quoted and declined.

That is still worth having. Consumer Affairs Victoria's advice is to ask for the service history, because "regular servicing by a qualified mechanic, according to the manufacturer's specifications, makes mechanical problems less likely." The catch is in the last part of that sentence. The book rarely shows the specifications.

It does not say whether the correct oil specification went in. It does not say whether the transmission fluid was ever touched, because on a lot of these cars the schedule says it never needs to be. ZF, which builds the automatic gearboxes in many European cars, says its transmissions "are generally filled with lifetime oil", yet still recommends a change after 150,000 km. It does not say whether the coolant is the right type or a top up of whatever was on the shelf.

None of that appears in the book. Most of it appears on a scan and on a hoist.

What should a pre-purchase inspection check on a European car?

Every module on the factory diagnostic platform, the known weak points for that exact model, the cooling system under pressure, the underside on a hoist, the fluids, the tyres and brakes, and a road test at full operating temperature. Here is what each one tells you.

Every module, not just the engine. Stored and pending faults across the whole car, read on the factory platform for that marque. ISTA for BMW, XENTRY for Mercedes-Benz, ODIS for VW and Audi, PIWIS for Porsche, VIDA for Volvo. A basic code reader is built mainly around engine and emissions faults, and on a car you are about to buy that is not good enough.

A pending fault is a repair the seller has not mentioned yet. A recently cleared fault memory is worth asking about too.

Service data inside the modules. Some of these cars store service counters and resets in their own electronics, and that record does not always agree with the stamps in the book.

The known weak points for that exact model. This is the part a general inspection misses. Every European model has a short list of things worth checking specifically, and knowing that list for the car in front of you is most of the value.

The cooling system under pressure. Not a visual check. A seeping housing that has not made a puddle yet is invisible to a walk around, and it is one of the most common things we find.

Underneath, on a hoist. Leaks, bushings, mounts, corrosion, previous repairs, and evidence of damage that has been tidied up.

Fluids, properly. Condition and specification, not just level.

Tyres and brakes as a record. Mismatched tyres and uneven wear tell you about alignment, suspension and how the car has been driven.

A road test to full operating temperature. Plenty of faults only show up once everything is hot, which is why a ten minute test drive around the block proves very little.

Why does it matter more on a European car?

Because catching up on neglected maintenance usually costs more, and because the faults tend to be known by model and engine. A list of jobs that would be a minor annoyance on a common hatchback can be a large share of the purchase price here.

The predictability cuts both ways. Problems arrive roughly on schedule, and somebody who knows the schedule can tell you where a specific car sits on it.

What checks should you run on the car's history?

A PPSR check and, ideally, a VicRoads Vehicle Report. An inspection tells you about the condition of the car. These tell you about its paperwork, which a mechanic cannot see on a hoist.

Consumer Affairs Victoria notes you can buy a $2 Personal Property Securities Register check "to confirm the car isn't under finance." The VicRoads Vehicle Report goes further. It includes previous roadworthy results, registration and transfer history, recorded odometer readings, an official PPSR certificate, and the car's "stolen and written off status."

RACV calls vehicle history reports "a must-buy before purchasing used car." Run one before you book the inspection. There is no point inspecting a car that turns out to be a repaired write-off or still under finance.

What can a pre-purchase inspection not find?

An intermittent fault that is not present on the day, anything inside a sealed component such as a transmission, and anything that fails after you drive away. An inspection is a snapshot. It is not a warranty and it is not a guarantee that nothing will go wrong.

What it does is remove the guesswork from everything that can be checked, and on a European car there is a lot that can be checked.

How should you use the inspection report?

As a negotiating position, not just a pass or fail. A report listing a few thousand dollars of work due within the year is not automatically a reason to walk away.

Sellers who know the car is fundamentally good will often meet you on it. The buyers who get the most out of an inspection are the ones who take the report to the table rather than treating it as a verdict.

Sometimes the honest answer is that the car is sound and you should buy it. That is a useful outcome too, and it is worth what it costs to stop wondering.

When should you book a pre-purchase inspection?

Before you pay a deposit, not after, and once you are reasonably serious about the car. Consumer Affairs Victoria says that when buying privately, "it is important to have the car mechanically inspected before you agree to buy it or pay a deposit."

That matters more on a private sale, because the car does not come with the statutory warranty a licensed trader's car can.

The inspection costs money, and most people are not inspecting five cars, so do it on the one you would actually buy.

If the seller will not allow an inspection, that is your answer.

We diagnose it. We fix it.

If you are looking at a European car, we will tell you what you are actually buying.

We have been working on European cars since 2016, across eighteen marques, with the factory diagnostic platform for each one on the bench. You get a written report with photographs, and a straight answer.

We are in Dandenong, five minutes from the highway, with off street parking and early drop off. Book an inspection before you hand over a deposit, not after.