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Hi Glenn,

If you mean one of the early pre-2008 models it goes on engine capacity, so the annual road tax is €1,809. All other examples of the V8-engined Audi R8 since then have had emissions well in excess of the starting point of Band G (225g/km and higher) so the annual tax bill is €2,350.

Hopefully that doesn't put you off! Here's our drive of the updated V8-engined R8 Coupé to whet your appetite...

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Hi Martin,

We asked Audi Ireland about this one. Here's the answer:

"The standard screen for the MMI system is automatically retractable. It electrically pops up upon engine start and reclines upon engine cut.

It only operates for satnav if that is fitted to the car. If the screen does not automatically retract then the Audi owner should get his car checked by an authorised Audi service centre.

There is a button that you can click to retract the screen, but this is only once the car has started. It should automatically come up next time the car starts regardless."

Sounds like you need to bring the car into Audi I'm afraid. Let us know how you get on.

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Hi Peter,

A brilliant car, albeit one with a couple of shortcomings relative to its German rivals. It's probably the best-looking car in the class, and the 500-litre boot is a match for the BMW 5 Series Touring and Audi A6 Avant (though much smaller than that of the Mercedes-Benz E-Class). It's utterly delightful to drive too, better even than the much-praised BMW, with brilliant steering and a comfy ride.

On the downside, the interior is a step behind the Germans (not enough space, old-fashioned touch-screen infotainment system, narrow front seats) and the fuel tank is on the small side, limiting your touring range and making the car feel thirstier than it actually is. The 2.2-litre diesel engine in 190hp form is the best all-round to go for, but the lower power 163hp is a bit cheaper to buy and you'll hardly ever notice the difference in day-to-day driving. Or, you could get the best version; the 272hp 3.0 D V6 diesel – a properly quick, practical car that.

Here's our road test of the XF Sportbrake

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Hi Eddie,

Expert answer

Hi Robert,

The weak areas on an X-Type are the suspension and transmission. Keep an ear out for gearbox whines, knocking suspension and rattling steering columns. Wheel hubs were known to fail on earlier models but a 2010 version should be fine. Worth noting that the X-Type seems to have higher repair and maintenance costs than an equivalent BMW or Audi - rather odd for a car that shares so much with a Ford Mondeo. 

Expert answer

Hi Dermot,

If you mean actually physically swapping out the engine and plumbing in a diesel then I wouldn't recommend it. Diesel engines are much heavier than their petrol counterparts and most car makers tweak the suspension, brakes and steering to allow for that fact. Putting a diesel lump in where a petrol one was could upset that delicate balance. Also, it's an enormous amount of expense and hassle to do so, when you could just trade in for a similar model with a factory-fit diesel.

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Hi Liam,

Pros are that Volvos tend to be very well made and are generally a reliable car and that 1.8-litre engine is an old Ford unit that's well proven and dependable. 

Cons are that for a car competing with the likes of the BMW 3 Series and Audi A4, the S40 is very small and a bit cramped and the emissions of that 1.8 will give you some fairly juicy tax bills.

Expert answer

Hi Ciara,

At that budget, I'd suggest going for either a BMW 320d Touring (very sleek, decent boot space and terrific to drive) or a Volvo V70 (bigger, comfier, more space but not as swish to drive or look at). Both are solidly built and reliable and there are plenty of them out there, so be choosy about spec, colour and condition.

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Hi Ruadhan,

That, I'm afraid, is a question with too many variable answers. Second-hand vehicle values are like stock market values - they go up and down and often rather unpredictably. There are a few rules of thumb, though...

1. It's got to be diesel. Yes, we (and others) have tried to educate the motoring populace that diesel power doesn't automatically mean better economy or lower running costs, but right now the market is diesel-crazy and if it doesn't sip from the black pump, it's not going to hold on to its value.

2. The lowest depreciating cars are, obviously, the most popular models. So the likes of the Ford Focus, Volkswagen Golf, Nissan Qashqai, Hyundai Santa Fe, BMW 3 Series, Audi A4 and so on will always hold on to their value the best. Check the list of the top-ten best-selling cars on the market - these are your depreciation heroes.

3. What about depreciation villains? Anything that the market doesn't trust, really. Estates tend to fare especially poorly, anything with a French badge is suspect and if it's Italian, forget it. You'll lose your shirt on any of these.

4. Spec is king. You can have the most in-demand car going but if it's painted bright yellow and has green seats, you're never going to shift it. So, to keep depreciation at bay, stick with dark metallics and subtle interior tones. Pale cabin colours tend to fare less well when it comes to wear and tear, so the market prefers blacks and greys on the inside too. If it's an executive car, it has to have an automatic gearbox. Anything with factory-fit air conditioning and Bluetooth telephony is looking good, leather is always helpful but other expensive toys don't always help a car hang on to its value.

Hope that's all of interest

Expert answer

Hi Tom,

If the stop-start system is not working ever then it's probably worth a trip to your Audi dealer to have it looked at, but bear in mind that there are plenty of conditions in which it will not operate and it may not be immediately obvious why. Here's Audi's official stance on it:

"The system is automatically activated when the ignition is switched on. If the driver doesn't want to use it, it can simply be switched off at the touch of a button.

"This is how it works: brake the car down to a standstill, shift into neutral and release the clutch. The system now switches off the engine and signals this via an indicator lamp. Depress the clutch before continuing the journey - the engine now starts automatically and the indicator lamp goes out again.

The start-stop function only works when...

• the driver's door and the bonnet are closed
• the driver is wearing a seat belt
• the vehicle has been driven at faster than 4km/h before stopping
• the vehicle is not pulling a trailer

In some cases the engine will not be switched off, for instance when...

• the engine temperature is still too low
• the difference between the interior temperature and the temperature selected via the air conditioning system is still too great
• the outside temperature is very high or very low
• the windscreen is being de-iced
• the optional parking aid or the optional park assist is activated
• the battery charge is too low
• the steering wheel is at a sharp angle or is being turned
• reverse gear is engaged
• the road is steep

The engine is started automatically by the system when...

• the vehicle rolls forward
• the windscreen is being de-iced
• there is a large difference between the interior temperature and the temperature selected via the air conditioning system
• the brake pedal has been depressed several times in succession
• the battery charge is too low