Expert answer

Hi Cormac,

Interesting one this. To be frank, it was news to us. We don't have a standardised headlight test on CompleteCar.ie (perhaps we should), but a trawl of the Audi-based internet forums does indeed seem to show that many C5 owners do have doubts about the power of their lights, especially on dipped beam.

While we can't find any definitive evidence that the facelifted model is any better, it seems that there are two potential fixes to the problem. One is to replace the standard bulbs with better models - and we've seen German-made Flosser bulbs recommended. Philips also produces a line of higher-output bulbs that may be worth a look. The other issue may be the state of the headlamp lenses, and any problems there can potentially be fixed by a good clean. Cleaning kits are available from most good motor factors. Incidentally, beware an aftermarket upgrade to a HID or Xenon headlight set. If it doesn't conform exactly to the original equipment specification, then there are doubts over the legality of such units and it could potentially lead to an NCT failure.

Expert answer

Hi Flamor,

We believe this means the car reckons it's time to have a service. You'll need to take it to an Audi dealer or a garage with proper diagnostic equipment to have this checked and reset.

Let us know how you get on.

Expert answer

Hi Tricia,

The new Mazda6 is a fantastic car and definitely comparable to the Audi A4 of equivalent value. The Mazda comes with a powerful and economical 2.2-litre diesel engine, which is refined and decently fast when needed. The car itself is more spacious than the Audi inside, plus of just as good quality. It's also comfortable and good to drive. In all, we thoroughly recommend it.

Here's our Irish test of the Mazda6 Tourer for reference.

Let us know how you get on.

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Hi Stevie,

You'd be able to pick one up for as little as €2,300 but you would probably be better off paying around €3,500 to get a really good one. They're immensely reliable - a typical Mazda in that regard.

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Hi Diarmuid,

With that kind of mileage, I'm afraid the value just plummets and that's notwithstanding the fact that the Mazda6 is reliable and very well built. I'd say you're looking at a value of around €2,500 to maybe €3,500.

As for changing, with that kind of annual mileage I'd say it could be well worth looking at changing for a newer diesel model. The 2.2 diesel Mazda 6 is a bit of a favourite around here, really good to drive with good economy. Just get the calculator out and do your sums carefully to make sure that you'll be saving money in the long run. With the cost of changing your car, it can be worth looking at spending money on your existing car, giving it a good going over and a tune-up, which can both prolong its service life and improve the fuel economy.

Hope that helps

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Hi Alanna,

Anything pre-2008 with a petrol engine is pretty hard to shift on these days, sadly, so I'd reckon you're looking at a value of possibly as little as €5,500 for the Mazda3 at the moment. To get the best from it, I'd suggest staying within the Mazda family (a Mazda dealer will usually give you a better trade-in on a Mazda than will another dealer) and trade up to a Mazda6 Estate. Loads of space, brilliant to drive, reliable and, with the 2.2-litre 129hp diesel, very economical too. SUV? Do you live up a mountain or at the far end of a rutted dirt road? No? Then you don't need one - stick to the family car market and the Mazda6 size class (which also includes cars like the Toyota Avensis, Ford Mondeo, Volkswagen Passat and Opel Insignia) is  where you'll get the best bang for your buck.

Let us know how you get on

Expert answer

Hi Catherine,

OK, so what you need here is something spacious (kids, even just the one, take up a heroic amount of space, as you know), something economical for all that annual mileage and something comfy so that your buttocks survive all that mileage. I think you should stay with the current rough size of car, as some of the best bargains can be found in the mid-size saloon segment.

First up is a Volkswagen Passat. Ideally, you'd get the 1.6 TDI BlueMotion version, a car in which we once managed to drive from Galway to Glasgow and back on one tank of fuel. Or, what about a Ford Mondeo? You'll easily get a 2.0 TDCi model for that money, and there are very few cars quite so comfy on a long journey. Even BMWs and Mercs can't always match the Mondeo for seat comfort.

Of course, if you fancy the high life, and are prepared to compromise on space a little, then there's the BMW 3 Series. You'll get a 320d or 318d for that kind of budget, but shop around to make sure you get one in a dark metallic, with leather and preferably an automatic gearbox.

Finally, there's the Mazda6. Bit of an unsung hero of this segment, it's brilliant to drive, spacious, good looking and you should be able to track one down with Mazda's excellent 2.2-litre diesel engine under the bonnet. Reliable as it gets, it should chomp through your annual mileage with nary a worry. Find the even more handsome estate version if you can.

Come back to us if you need help narrowing this down.

Expert answer

Hi Colm,

Of the ones you’ve suggested, I’d say that the Octavia is the best bet, not least because a Mazda6 or Toyota Avenisis with a 1.8-litre engine is going to be at the very bottom of the range. Your budget should get you an Octavia with the 1.2 TSI turbo petrol engine (which is actually a better choice than a naturally aspirated 1.6 or 1.8) and probably with a 131 numberplate.

Yes, you might have to swallow a high-is mileage, but as long as you get one with a full service history, that shouldn’t be a major issue as the Octavia is a reliable car. Other models worth considering are the Toyota Corolla, VW Jetta, SEAT Exeo (if you can find one) and Honda Civic.

Expert answer

Hi Jon,

So, your average mileage is going to be around 25,000km per year. That’s just on the cusp of needing a diesel, so I’d suggest going for the Mazda in this case, as it will be much more efficient at that kind of journey, and the constant long motorway runs will keep the particulate filter in good order. Plus, the Mazda will likely be more reliable than the Megane in the long run.

Expert answer

Hi Paul,

I’m tempted to say get another 520d — for the budget, they’re hard to beat. Well worth looking at an Audi A6 2.0 TDI as an alternative, though, and a Mercedes E 220d. Or a Jaguar XF if you’re feeling like a bigger change. Of course, what you could do is take that budget and spend it on a two-year-old Skoda Superb and get a fully-loaded version...