Expert answer

Hi John,

To say that the RX-8 is a bit of a mixed bag is to venture into the grassy uplands of dramatic understatement. Brilliant to drive, sexy to look at and surprisingly practical, if you love rotary engines, then it's a must-buy at some stage.

But boy does it have its problems. In the RX-8's defence most of the engine's problems are down to maintenance, but the problem is that we've become accustomed to cars working faultlessly without us checking on them like spoiled kids every few minutes. An RX-8 isn't like that; it needs constant care and attention. Mostly this is to do with the oil. Rotarys get through a lot of it, so you've got to check it regularly (like, every week) and keep it topped up with high-grade stuff. No cheap oil here. Failure to do so will mean the early wear of the rotor tips and that's when the engine is on the slippery road to oblivion. Cared for properly, an RX-8 engine can rack up massive mileage mostly faultlessly. But let it slip and we've heard of engines having to be replaced after as little as 40,000 miles.

Tread carefully.

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 Roisin,

Basically, yes, Ibizas (SEATs in general) tend to be very solidly reliable and that little 1.2 diesel is pretty economical. One word of caution though: it's also pretty noisy and if you're doing big mileage every week, that could become tiresome. It might be worth taking the same budget and having a look for an approved second hand Leon, with a decent warranty, with the far superior 1.6 TDI diesel.

Let us know how you get on

Expert answer

Hi Peter,

This depends on a number of factors. 1) Was the engine faulty or did the installation cause the leaks? 2) Do you have a record or receipt for the engine and the work? 3) Did the engine seller and mechanic that did the job mention a warranty?

We suspect, as the oil leaks were not there initially, the best you'll get is an offer to put the leaks right. Though if one of the leaks is a rear crankshaft oil seal you may find that the garage may be reluctant.

It really boils down to whether there was a warranty implied or agreed.

Let us know how you get on.

Expert answer

Hi Diarmuid,

On the site we have a full test of the XF Sportbrake estate here, powered by the diesel engine. I never added in the average economy figure as my driving that week was mostly in an urban setting. For the record, it used about 9.0 litres/100km (31.4mpg). It should do a lot better on the motorway.

Is that of help?

Expert answer

Hi Stuart,

The new-shape Hyundai i30 is a really great car. Its interior quality and space will be a decent step up from your Fabia and the i30 is more refined on the road too. Good choice. If you are looking for alternatives, take a look for Kia cee'ds of the same age, as they're essentially the same car underneath and the Kia warranty itself is a little longer (though different).

Let us know how you get on.

Expert answer

Hi Donal,

The Discovery is one of our very favourite cars, especially for the way it can carry seven full-sized adults in luxury-car comfort down the motorway. With big mileage like that though you will be rocking up the fuel bills, as a 2.7-litre V6 diesel Disco will only get about 29mpg in normal driving conditions. That said, you won't get any better from any of its rivals, so there you go.

As for reliability, Land Rover has come on in leaps and bounds in this respect recently, but there's no getting away from the fact that its vehicles tend to be more fragile than the Japanese competition. Small electrical niggles are the most likely problems but both the gearboxes and the air suspension can give problems too and those are rather more serious issues. The V6 diesel engine is pretty solid though.

It would be worth checking out both a Toyota Land Cruiser and Mitsubishi Pajero too, but while both of those would be more likely to have better reliability, neither can hold a candle to the Disco's on-road refinement and comfort.

Let us know which way you go

Expert answer

Hi Eamonn,

Honda is justly famed for the reliability of its cars and you shouldn't experience any major problems. The paint on some Civics can be a bit on the thin side, which means that, where it wears, you can actually get a bit of surface rust appearing, which will need attention. Engine management system glitches can lead to a drained battery if the car is left sitting for a week or two as well. Other than that, there seem to be no other major issues. 

Compared to a Focus, you'll find the ride and handling a touch flat-footed, as Honda went with a cheaper torsion bar rear suspension, but it should compare very favourably to a Mazda or Toyota - Hondas generally feel noticeably more 'premium' than either of those brands.

Hope that helps