Expert answer

Hi John,

I'd say on a trade-in you'd probably get about €2,500 to €3,000 for it. But make sure you do your sums carefully when changing. The cost of change can often outweigh what you're spending on petrol. Maybe practice some seriously economical driving techniques? Take any excess weight out of the car by emptying the boot etc. And get the engine properly serviced and tuned, with fresh filters and new oil.  Check the tyres for condition and correct pressure. You'd be surprised what a difference things like that can make to your fuel consumption.

Hope that helps

Expert answer

Hi Patrick,

At that kind of mileage, you really should be going for a petrol. A 320i has plenty of poke, is very refined and nice to drive, and has decent fuel economy and emissions. 

Expert answer

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 David,

It's a pretty solidly built car the A4 Cab, but just avoid the 1.8T petrol engine as apparently it gives no end of trouble, and watch for clogging fuel fillers on the diesel models if you're doing low mileages. Clutch problems are also not unheard of, and check carefully for any signs of oil leaks in the engine bay. The good news is that because it has a folding cloth (not steel) roof there are no reported problems with an overly-complicated roof mechanism.

Expert answer

Hi Alanna,

If you like the Mazda, then it would be well worth considering an upgrade to the current-shape Mazda3 with the 1.5-litre SkyActiv diesel engine — it's smooth, refined, very economical and with the usual Mazda reliability. A lovely car. Also worth considering are the Honda Civic 1.6 iDTEC diesel or Kia cee’d 1.6 CRDi.

A few reviews for you:

Mazda3 review

Honda Civic review

Kia cee'd review

Expert answer

Hi John,

Yes, it certainly is. Now, that comes with the caveat that it will be replaced by an all-new model nest year, but the current V40 is still pretty good — handsome, good to drive, comfortable, and well made. It is a little short on cabin space, though, which is worth remembering, and it lacks a good down-sized turbo petrol engine in the mould of Volkswagen’s 1.0-litre TSI as yet.

Here are a few reviews for you:

Volvo V40 D2 review

Volvo V40 T2 R-Design review

Expert answer

Hi Mary,

At just 1,500km per year it's highly likely that a petrol car would be better suited to your needs. Diesel cars are usually more expensive to buy in the first place, and new petrol cars are much closer to their diesel counterparts than ever before in terms of fuel economy and tax so in your case the balance tips in favour of petrol. On top of that, diesel cars are designed to be driven at higher speed regularly and they don't take well to a life in town.

Recently we did a piece of research in conjunction with Cartell.ie looking into this very thing. Read the results of the research here.

Expert answer

Hi Joe,

Your first choice there is a bit of a hard one to argue with. The Mazda3 is impressively well built, hugely reliable and, in saloon form, not only has a big, useful boot but also manages to look better than the five-door hatch on which it's based. The downside is a dour, plain cabin but that €6,000 budget should, with a little haggling, get you into a 2007 1.6 TD diesel model. No, you won't get the benefit of the cheaper post-2008 tax, but for those occasional runs up to Mayo, you'll be saving yourself a whole lot of fuel.

Hope that helps

Expert answer

Hi Patrick,

With that kind of criteria, and if you’ve driven your wife’s Prius and liked it, I’m minded to recommend the Lexus. The hybrid systems are related (although of course the Lexus is considerably more powerful and sporty), it’s well-equipped (most of what you want is on the standard equipment list) and with mileage of 10,000km a year, it should be just about ideal. Plus, it’s unbreakably reliable.

Here are a few reviews that might interest you:

Lexus IS 300h review

BMW 3 Series Gran Turismo review

Volvo V40 review

Expert answer

Hi Jan,

Yes, if you’re doing fewer than circa 20,000km a year then you are indeed better off with petrol. If it’s the new-shape Hyundai i30 you’re talking about, the good news is that it does come with a deeply impressive 1.0-litre petrol turbo T-GDI engine, which is a belter. As for the particulate filter on the diesel, generally speaking a 25-30min run along the motorway, in fourth gear (at 120km/h where permitted), will do the job when it comes to keeping it clear.