Expert answer

Hi Una,

We'd immediately suggest you go for the petrol car. The low mileage one will be fresher all-round, plus it's likely it'll last longer before you need to spend money on serious maintenance and repairs. The diesel model may be more economical theoretically, but diesel cars are not best suited to permanent use in an urban environment and we suspect it'd cost you more in the long run.

We conducted some research into this subject in conjunction with Cartell.ie recently if you're interested. Read that piece in full here.

Best of luck

Expert answer

Hi Pat,

To be honest, if badge snobbery were outlawed in the morning, the Kangoo is what we'd all be driving. Massively spacious, comfy and not at all bad to drive, it's the closest modern successor to the original Renault 4. And yes, that's a good thing.

As for reliability, they're pretty good. Being van-based, the mechanical bits are generally of an older design, so the kinks have been long since ironed out and they don't break down much. The only thing to watch for, as on any French car, is the electrical system, which can storm off in a Gallic huff, especially where electric windows are concerned.

Let us know how you get on

Expert answer

Hi Catherine,

Of the two, I'd go for the Focus. Bigger, much better to drive and barely any less economical in day-to-day driving. That generation Corsa was pretty crude, really - noisy and not especially nice to drive.

They're both pretty robust though, which is good, although you should check the Focus carefully for underbody rust as some early cars had very poor weather sealing.

Let us know how you get on.

Expert answer

Hi Brian,

BMW quotes a combined cycle economy figure of 35.8mpg (7.9 litres/100km) for the new 740i. Depending on your usage and driving style we'd expect a little worse than that, around 30mpg (9.4 litres/100km).

Hope that helps

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 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 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 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 John,

Yes, but with one small caveat. The Prius has always been one of Toyota's best, and indeed best-built cars. It's essentially a flagship model, particularly for Toyota's eco-friendly ambitions. There have been a few recalls (for malfunctioning brake lights, airbags, steering and brake issues, as well as the infamous sticky-throttle-pedal one), but generally Prius are solidly reliable and there have thus far been no reports of fading or failing battery performance. We've heard one or two reports of rust breaking out, but they're probably most likely down to unattended panel damage exposing bare metal.

The caveat? It depends how and where you drive as to whether or not it's worth buying a Prius. Yes, you'll get cheap road tax, but to get even vaguely close to Toyota's quoted 65mpg fuel economy figures, you're going to have to drive with the reticence of a trappist monk. Get anywhere in the neighbourhood of enthusiastic driving and you're going to see the fuel economy plummet, ditto for undertaking any long motorway journeys. But, if you spend most of your time in town, where the Prius' electric motor and stop-start systems can best bring their armament to bear, then the economy should pick up, and you'll have one of the most comfortable, reliable and relaxing cars in which to hustle your way through city traffic.

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