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Hi David,

There are no major reported reliability problems for the AMG M156 V8 engine, other than that they can occasionally develop issues with the bolts that hold the engine head in place. Mind you, a huge amount will depend on how well the previous owner looked after it. While reliable, AMGs are of course bought for their high performance, and if the previous owner has thrashed it about, or not kept it serviced properly, then it could be troublesome. A full book of service stamps should be a good sign, though.

As for spare parts, I really wouldn't worry too much about that, as car makers produce spare parts for a very long time after a vehicle goes out of production.

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Hi Pau,

It's a fabulous car, really - low slung, gorgeous, great to drive and just about practical enough for everyday use. Not cheap to run, though, and don't dream of buying one without a copper-bottom service history. Worth considering a 535d as well - similar performance and handling, but much more affordable. Read our most recent review of the 640d below (admittedly in Gran Coupe guise - but same applies for the most part):

BMW 640d review

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Hi Elaine,

That is high-ish mileage for a two-year old car, but if it comes with a full service history then that should soften the blow a bit. I’d say you’re looking at a trade-in value of around €27-29,000.

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Hi Patrick,

If you mean the current model, then I’m afraid it’s a little too early for us to tell, as it hasn’t been around long enough yet for any major reliability issues to shake out and all cars would still be under warranty. We’d be surprised if it has suffered anything major, though – it seems very well built.

The older model is also very well built, but you need to check for sticking exterior door handles, trouble with the diesel particulate filter (DPF), faulty electronic handbrakes, dodgy stability control modules, leaky sunroofs and excessive front brake wear. If it has the DSG automatic gearbox, you also need to check and make sure that it has been properly serviced, and on time, because it’s a complex piece of equipment that needs careful looking after.

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Hi Conor,

The critical thing is to get the car history checked by a service such as Cartell.ie. Buying from a private buyer obviously leaves you without comeback in the event of mechanical issues, but you could consider an aftermarket warranty. It's the history that's the important bit. If there's anything of concern or if there is outstanding finance payments, walk away. Plenty more out there. 

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Hi Nigel,

The Duster has been on sale in Europe for more than a decade now and, for the most part, it has built up a decent reputation for reliability. Because it’s so basic, it lacks many of the more modern electronic systems that cause so many problems in more expensive models, which helps. The 1.5 dCi diesel is a sold engine, although you do need to keep an eye out for troubles with the turbo if it hasn’t been serviced properly.

Other things to think about are damage underneath the car from owners trying to drive further off road than the car was designed for. As long as you’re buying one with a full service history I wouldn’t have too many concerns.

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Hi Cathal,

You are indeed entitled to a refund, but not immediately. Under the Sale of Goods and Supply Of Services Act, if a product is “not of merchantable quality” then you are entitled to a repair, replacement or a refund. It will be up to you and the dealer from whom you bought the car to discuss which of these will be the case, and most dealers will try at least to repair the car at first, as obviously that’s usually the most cost-effective route from their perspective.

You can demand a refund and nothing else, but I’d make sure you have a good solicitor on your side before doing that as technically if the dealer is offering you a repair then they are fulfilling their duties under the act.

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Hi Tom,

None of which we’re aware, mostly because the Tucson is too new a model (we presume you’re talking about the current version) for there to be any data on common issues. Hyundais all come with an unlimited mileage five-year warranty though, so any issues that do arise should be sorted pretty easily.

If it’s the older model of Tucson that you’re looking at, it was also enormously reliable with very few reported issues (mostly to do with the stereo system and the fuel gauge, oddly) so as long as you buy one with a full service history, I wouldn’t have any worries there either.

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Hi Cathal,

The Qashqai is a reliable car, as are pretty much all Nissans, but the Corolla will still have the reliability edge. If reliability is ultimately your priority, then go for the Corolla. That said, if you really want the Qashqai, as long as it comes with a full service history and you keep it regularly serviced, we wouldn’t expect to see any major issues occur.

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Hi Gary,

Wow. Big question. In general terms, no it's not. In fact, the rule of thumb, to maximise your value for money, is to buy at two years old and sell at five years old. That way you avoid the worst ravages of depreciation and, these days, you often get a good bit of original factory warranty too.

Of course, that doesn't take into account other, occasionally less tangible, factors such as inclusive service plans, the latest technology, improved safety equipment etc.

Buying new can make sense, especially if you make maximum possible use of a PCP scheme, but for the most part, a good used car is almost always better value overall.