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Hi Keith,

Sadly this story is all too common these days. Many components of a modern diesel car are not designed for low mileage use and this should be explained to buyers by the dealers, though in fairness, buyers right now still think they should have diesel, even if the don't do high mileage. I'm not blaming the dealers.

We wouldn't call it a defect, as such, more a limitation. To prevent such things happening again we'd recommend low mileage diesel drivers to regularly take their car for an extended motorway run holding the revs higher than normal (using a lower gear). This should help prevent the build up of deposits in components like the EGR valve and even in the particulate filter in the exhaust.

It's a shame you didn't know to do that before being hit with this expense.

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Hi Veronica,

Depending on the condition and history, I'd say about €13-14,000.

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Hi David,

All I can say is go for it. The CC (I still always start to say Passat CC even though the Passat name has been dropped) is a fabulous car - smooth, comfy and good to drive and really quite devastatingly handsome. Problems are few and far between, but make sure that the service record is up to date (at only a year old it certainly should be) and check that the seals around the frameless door glass is in good nick and keeping out the rain. Other than that, I'd say you can't go wrong.

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Hi Gary,

We rate the Scirocco very highly indeed. It's peachy to drive, quietly handsome and surprisingly practical for a coupé. The 1.4 TSI petrol engine is actually fine in the Scirocco, although it can't really cash the cheques the body is writing. It's got more than decent performance, but if you want some proper thump, then the 2.0-litre 140hp diesel is definitely the better choice. Best of all though is the 2.0 TSI with the engine from the Golf GTI. It can get a little thirsty if you drive it like it begs to be driven, but as an all-rounder, it's very hard indeed to beat.

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Hi Matt,

I'm afraid €22,000 doesn't seem to be a high price for that car any more. In fact, it's right in the general ballpark for the Passat for a 2012 diesel. The problem you're looking at is one currently facing a great many used car buyers - used values have risen significantly since 2009, because of the scarcity of good cars in the market, a legacy of the collapse in new car sales following the financial meltdown. In some cases, values have risen by as much as a third, and with both Volkswagens in general and diesel models especially being highly sought after, you're shopping in one of the most expensive categories in the second hand market.

Sorry to not have better news!

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Hi Nicky,

OK, I think you have a couple of options here. First off, assuming you have a friendly, trustworthy mechanic who looks after your Yaris, it's worth having a word with them to find out how much life they realistically think is left in it and how much money you'll need to spend to keep it going. If the omens are good in that respect, then there's nothing wrong in the slightest with sticking with what you know and keeping your current, faithful steed.

If it's a poorer prognosis then I'd suggest sticking with what you know and simply upgrade to a newer Yaris. The model that's just been replaced was a fine car, sturdy as ever and really quite nice to drive. You won't go wrong. As an alternative, have a look at a Honda Jazz. They are usually a little more expensive than an equivalent Yaris but are more spacious inside and a little more technically advanced, so well worth a look.

Let us know how you get on

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Hi Paul,

Bluetooth was not standard on that car. Volkswagen introduced it as standard in 2012.

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Hi Roy,

The Passat is a good, solid car that with just a few points to check. Some of the early 2.0-litre TDI engines had some fragility in the turbo and injector departments, so have any of those cars checked carefully. The 1.6 FSI petrol engine is pretty solid but bear in mind that in a car of the Passat's size, it will have been thrashed pretty hard to keep up with traffic. Have a close look and listen to the suspension for any noises or clonks, and make sure the power steering feels consistent and precise as that system can give trouble too. 

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Hi Aisling,

No, it should be OK as long as you are absolutely on-the-ball when it comes to making sure that it has a full service history. The Tiguan is essentially a tall Golf, so all of the mechanical bits are pretty robust and well proven, but watch for some small niggles. The electronic handbrake (if fitted) has been known to fail. The rear door handles can stick open, but that should have been sorted under warranty and the air conditioning can fail, but that's usually just the dashboard switches and not the deeper mechanical bits of the system. Oh, and check carefully underneath for signs of off-roading damage - Tiguans aren't really designed for proper mud-plugging, but the four-wheel drive system sometimes fools people into thinking that they're Land Rovers...

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Hi Siobhan,

Although the Passat is a really well built car, I'd go for the Focus in this instance. The Passat's 1.6-litre petrol engine struggled with the weight of the car, and that made it both uneconomical and rather prone to developing problems. The Focus, although a smaller vehicle overall, struggles less with its 1.4-litre engine and the general build quality on that first generation Focus was excellent. Just check carefully underneath for signs of rust - some first gen Focus models didn't get proper underseal at the factory.