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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 Andy,

If you're only covering 10k a year mileage then you're probably better off in a petrol, so go for the 1.6. It's a solidly reliable engine too. If you want some alternatives, then maybe have a look for a Toyota Corolla Verso or a Honda FR-V, both of which come with pretty frugal petrol engines and are hugely reliable. 

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Hi Declan,

Yup, it's exactly the same car. Opel changed the styling at the front, tidied up the dashboard design and gave it some new engines, but the overall structure, body and dimensions remained the same. 

Read our Opel Mokka X review here

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Hi Kieran,

Yes, turbocharged petrol engines do often have exhaust gas recirculation (EGR) systems and dual-mass flywheels, but they are far less likely to cause problems due to, respectively, the different exhaust gases and the torque characteristics of the engine. Added to which, petrol engines work at lower combustions pressures and with less vibration than diesel engines so there's a little less wear and tear to worry about.

No, turbocharged petrol engines don't have particulate filters as, for now, they're considered 'clean' enough not to need them. That will change in the coming years, however.

Finally, the low-down-power thing is simple physics. Most turbocharged petrol engines and their diesel counterparts are pretty close on top-end power numbers (generally grouping around the 110-120hp level), but the difference you're talking about is torque - turning force, that low-down lugging sensation. Some of that is down to turbo design and the fact that a heavier diesel engine can accept higher turbocharger pressures, but most is simply down to the fact that diesel burns from compression ignition, which generates more torque and makes the engine feel more muscular at lower rpm. 

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Hi Martin,

It’s going to be a lower-slung, 'coupe' version of the X1 SUV, with a higher price tag and a coupe-like roofline in the mould of the bigger BMW X4 and X6. It’ll mostly carry over the engines and chassis from the X1, which means the entry level model could be the 150hp 2.0-litre 18d engine. We’ll have more details towards the end of September after the car is officially unveiled for the first time at the Paris Motor Show.

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Hi F D,

Short answer? We don't know yet. Theoretically, petrol engines heat up much more quickly than diesel engines (mostly because they're less thermally efficient) and therefore shorter journeys are less of an issue in that respect. It just depends on how much heat you need to generate to clean the filter and for how long. I'm sure that car makers will claim, as they did with diesel, that the filters are designed to be maintenance free, but then we've heard that before haven't we?

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Hi Gary,

It’s only available in the 310hp S3 model at the moment, and given the trend for down-sizing and having smaller, more efficient engines, I’d say it’s unlikely to be offered in a lower state of tune in a more affordable version. Mind you, the 1.4 TSI engine has a very healthy 150hp so is well worth looking at.

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Hi Sheila,

Both should be reliable, with the Hyundai just edging it in that regard. As you say, neither will be cheap to run, but with your mileage your only major cost is going to be motor tax and at least you can budget for that. Do plan to take at least one longish spin a week though to allow the diesel engines to warm through properly or you'll be looking at big repair bills.

On balance I'd go for the Hyundai, but it would be well worth looking at something like a Ford S-Max or SEAT Alhambra, which have even more space and generally lower running costs. 

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Hi Martin,

It'll be more of a thorough facelift, but Volkswagen may well decide to break out the Mk8 badges. Expect to see a major interior update with a big central touch screen (with gesture control) and some new and updated engines - including, possibly, a new family of 1.5 TDI three-cylinder diesels. 

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Hi Jason,

No. Renault is still in the process of rolling out AdBlue, or Selective Catalytic Reduction, injection to its 1.5 and 1.6 diesel engines.