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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.

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Hi Malcolm,

Your car has a cambelt and it needs to be changed at least every four years or 36,000 miles (58,000km). Those engines get badly damaged if the timing belt snaps so don't scrimp on it.

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Hi Sonia,

It turns out that there are 2.0 TDI engines from 2011 with chains and with belts - according to our date. So we'd need either your registration or the engine code from your car to check for sure. You can send those in private using the comment section below.

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Hi Sean,

Yes, the water pumps can fail, there can be issues with the turbo on diesel engines and the CD players can need re-coding. Also, if the spare key is missing, it’s hugely expensive to replace.

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Hi Tony,

There's no major recurrent fault for the flywheel on a Q5 specifically (although dual-mass flywheels generally come in for a lot of reliability criticism across all brands), but there was a recall for Volkswagen Group 2.0 TDI diesel engines a while back to replace faulty flywheels, so it's worth checking to make sure that's been done. If it doesn't show up in the service history, get in touch with Audi Ireland customer services, as they should be able to find out if a specific vehicle has or has not had the work done. 

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Hi Catherine,

To be honest, I wouldn’t. Quite aside from the fact that the Carisma is  dull to look at, sit in and drive, it was also quite unreliable for a car from a major Japanese car maker. There was no end of problems with the engines and worse still, the 1.3 was hopelessly underpowered. If you want a simple, reliable car from around 2002, think Toyota Corolla instead.