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Hi Pat,

The dealers are, in fairness, being evasive because they don't have the full picture yet. None of us do, to be honest. However, there's no really good reason for not buying an A6. It's an excellent car, very frugal and lovely to drive, and beautifully built too. If it does turn out to be one of the cars on which the CO₂ emissions and fuel consumption has been under-estimated, then you will be compensated for any gap - Volkswagen Group has promised that customers will not be out of pocket as a result of all this. So I'd say go ahead - cracking car.

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Hi Martin,

I'd say you should advertise it for around €6,000 all things being equal. As for the diesel controversy, it's a bit hard to say - there's nothing at all wrong and an awful lot right with the 2012 Passat - it's a cracking car, it's just that you need to bear in mind that the overall engine performance may well be altered when Volkswagen begins its recall in January. If that's putting you off, then a Mondeo is definitely well worth looking at, but also take a gander at a Mazda6, Opel Insignia or Hyundai i40.

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Hi Niall,

We asked Ford Ireland about this for you. First of all, it was confirmed that your car has a timing belt, not a timing chain.

With regards to the injectors, a longer response was given:

"Mondeo DV6 has a Continental fuel system and the fuel injectors fitted on this system have correction factors on them. What this means is that they have a unique ID number that the engine's PCM need to know so it can operate them. The pump has nothing to do with how the injectors operate and its role is simply to bring the fuel up to the high pressure demanded by the system. When an injector is replaced the PCM needs to know the new number of the injector installed. This is inputted using Ford IDS Diagnostic tool. If the injector is installed and the correction factor is not learned using the Ford Diagnostic tool the vehicle will not run at optimal level and the engine may exhibit excessive noise and emissions."

Finally, with regards to a shaking steering wheel, that could be something as simple as a wheel going out of balance, so check that before you consider changing any brake items. Whether the dealer should replace warped discs after six weeks is not so clear - it really depends on the terms of your warranty.

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Hi Philip,

Not all marques and not all models use AdBlue as yet. AdBlue is a urea solution that can be injected into he exhausts of diesel cars to neutralise a significant proportion of their emissions of nitrogen oxides (NOx) - very much in the news at the moment of course. The rule of thumb is generally only that larger, more powerful engines need an AdBlue treatment system as many smaller engines don't need the assistance. Each manufacturer, and indeed each individual engine, will have its recommended AdBlue top-up times, and it will be directly related both to mileage and how much acceleration the car has been doing. You can top up the AdBlue tank yourself - a 1.5-litre refill should cost around €11-12.

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Hi Gary,

Volkswagen has confirmed that, following investigations, the EA288 engines, designed for EU5 and EU6 compliance, are not affected by the scandal surrounding the EA186 engines. In other words, the current Volkswagen diesel engines are fine and have been given a clean bill of health. If you've any lingering doubts over a car that you own, go to http://www.campaigncheck.ie and enter your reg number.

Read our full news story on this subject here

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Hi Cesar,

Yes, pretty much an instant fail there. If you take out the cat and the EGR valve you're going to push your emissions readings up significantly. Please don't do it - that equipment is there for a reason.

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Hi David,

Yes it does. Post 152-registration it got an updated engine with a urea injection system so it won't be affected by the 'defeat device' software. Examples before that though are on the Volkswagen Group's recall list. Only way to check for sure is to put your registration into the special website, as described here.

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Hi Michael,

It depends on the model but if it's the Octavia 1.9 105hp then the CO₂ emissions are officially quoted as 135g/km, so you'll pay €280 a year to tax it. If it's a Fabia hatchback 1.9 TDI then it'll be €270 (129g/km of CO₂), a Roomster 1.9 TDI will set you back €390 (145g/km) and a Superb the same €390 (153g/km).

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Hi Damien,

No, it's the same EP6 model 1.6-litre petrol engine, with 120hp and CO₂ emissions of 145g/km.

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Hi Charles,

I assume you mean this Volkswagen story. At this stage we have been told that it only affects certain cars powered by the 2.0-litre TDI engine, but not all of them. So, going by current information, the 2014 model year 1.6 TDI Audi A3 Saloon is not effected. Keep an eye on our news page and social media feeds however, as we expect more news to emerge in the coming days.

Kind regards