Expert answer

Hi John,

You've not mentioned which gearbox specifically, so we'll assume you mean the DSG automatic. These can develop faults with the 'mechatronic' unit that controls gear shifting etc. If that has to be replaced then it's expensive, though sometimes just changing the transmission fluid helps.

That needs to be done regularly in DSG units using the 'wet-clutch' setup. Those with the dry-clutch system don't need such maintenance.

If you've thinking about buying a car using a DSG transmission, then make sure you take it for a decent test drive through the full speed range up to motorway speeds and monitor the gear changing for judders or other issues. If possible, spend some time in stop-start traffic as well as that can cause the clutch packs and mechatronic unit to overheat if they are weak and you'll soon notice if something isn't right.

Saying all this, the DSG transmissions aren't necessarily bad designs, you just need to ensure the one you're buying is still operating properly.

Expert answer

Hi Seoirse,

I’m afraid there’s no way for you to do that yourself in the settings. It requires a change to the car’s country code, which can only be done by Volkswagen or via some “OBD” tools that independent garages use. If you have a good mechanic, mention that to them and see if they’re willing to help.

Expert answer

Hi Connor,

If it is a pan-European warranty, then it should be valid and yes, an Irish dealer should be fine with carrying out warranty work if needed. If possible, get the car's VIN from the seller and contact Volkswagen Ireland with it to check its warranty status. 

Expert answer

Hi Des,

Our information is 240,000km or 15 years on that car, but in truth, the dealer should know best. A car manufacturer wouldn't just change the interval for the sake of 'lining its pockets' as you've described and it's not unusual for changes to the interval to happen in a car's lifetime as experience is gathered. 

No harm double checking that information with a few other Volkswagen dealerships and, as the car is out of warranty anyway, you can always consider getting the work done at an independent garage. 

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Hi Ahmed,

It really depends on where you do most of your driving, and how many people you tend to carry around. The 115hp model is fine around town and at lower speeds if you're on your own, but if you have three other people on board regularly, or you often drive in hilly areas, you'll appreciate the extra performance of the 150hp engine. There won't be much of a difference in the real-world fuel economy. 

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Hi Paul,

I asked Dave and Neil on the team to answer this as well as myself so you get a cross-section of opinion. Here's what Neil said: "There’s no point in going for the Audi over the Golf. Sure, it has more power and 4WD but it’s no more fun to drive, and will be more expensive to run. The GTI is the better of those two. However, the M340i — Touring especially — is one of the best BMWs that has ever been made, and I reckon if you have the chance to own one, you should take it. "

Dave was in agreement: "I’m with Neil on this one, the move to the Audi or the Golf 8.5 R from the Golf 7.5 isn’t going to deliver as much overall fun, even if the performance figures increase. The BMW is not only a lovely thing, but it’s a different style and should be much sweeter overall. "

I have to admit, I'd agree with them both. The S3 is good, but very subtle, perhaps too subtle? The 8.5 GTI is notably changed from the 7.5 (I'm the only one of us that has driven it so far and it's a cracker), but even so, I'd find it difficult to ignore the allure of the BMW's six-cylinder engine and rear-lead chassis balance.

Do let us know which way you go on this.

Expert answer

Hi Karen,

I'm afraid we are no better-placed to make that decision for you as we know nothing about the car or the dealership. If the dealership says it replaced the belt then it's not likely to be lying about that, and you could pay an independent mechanic to take off the timing belt's top cover to inspect the belt. 

I'd be as worried about oil and filter changes, which are crucial for the long life of an engine.

If you have any doubts, walk away from the deal, as there will be other cars.

Expert answer

Hi John,

It should be changed at least every 210,000km, regardless of time. 

Expert answer

Hi Teresa,

We used to get so many queries on this subject that we published a feature called Why won't my car's stop-start system work?

If you read that you'll discover that the systems are highly sensitive to battery charge and load, even when working perfectly. Could it be that you often have high-load items switched on? Things like heated seats, air conditioning, rear window demister, that sort of thing.

Now, in a DSG-equipped automatic car, you shouldn't need to put the car into neutral to get the stop-start system to work - that's only on manual cars. You can leave it in D (drive). What does affect it, however, is how firmly you are holding your foot on the brake pedal when at a standstill. Sometimes it's necessary to give the brake pedal a firm push before the engine will cut out.

Other things to watch out for: if you move the steering wheel, it is likely to cause the engine to restart. And if you're in the Sport driving mode or you've selected the Sport gearbox setting, then stop-start might not work either.

If none of the above changes your experience, I suggest getting a mechanic to come out in the car with you to check it over and observe how you drive, and then let them do the same.

Best of luck with it - come back to us and let us know how you get on.

Expert answer

Hi Avdirrahman,

It's every 210,000 kilometres regardless of time.