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Hi Patrick,

I really like the S80 - a lovely big comfy thing, ideal if you're doing lots of long journeys and that 1.6 diesel engine is super efficient; you could get up to 1,500km from a tank of fuel. 

Reliability shouldn't be a major issue once you make sure that the car has a full service history. Like any executive saloon there's a lot of electronic toys in there and if it's been well cared for, there's less chance of them going wrong. Keep an eye on the service schedule to make sure that the engine has always been topped up with the highest grade of oil and if it feels down on power or sluggish when accelerating, it's most likely the exhaust gas recirculation (EGR) valve.

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Hi Tony,

New or old? Frankly, they're all good. The current car is slick, massively spacious, lovely to drive and, aside from occasionally poor fuel economy, terrific ownership prospects. 

The previous generation is all of that with slightly less slick styling inside and out. Make sure you go for the later, post-facelift model that uses Mazda's own 129- or 180hp 2.2 diesel engine.

Finally the original - made from 2002 - it's a landmark car. Reliable, fabulous to drive and quietly handsome. They're super-cheap now and a perfect low-budget purchase.

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Hi Michael,

If it's short trips and city driving then you're probably better off with the petrol model. It's significantly cheaper than the diesel version, which gives you plenty of budget to buy fuel and pay the slightly more expensive road tax. One word of warning though - from personal experience it can be almost impossible to move on a Mk1 petrol Qashqai when the market is so diesel-obsessed. Several people I know have had to take a bath on second hand value when it came to trading in a first gen 1.6 petrol Qashqai so you need to be aware of that. The new 1.2 petrol turbo version should by rights fare better because it's so efficient but with the market still being diesel mad, you need to be careful.

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Hi Dan,

Hmmm. Generally for your mileage I would recommend a petrol car, but the bad news is that in your size bracket, petrol engines are a little thin on the ground. You could go for either a straight replacement for your Corolla by getting a Toyota Auris 1.4 D-4D, which is a very fine car, or you could, as you suggest, branch out and snap up a Hyundai i30 1.6 diesel - again a very fine car and with that five-year warranty, a very tempting buy. 

But, with your mileage profile, I would suggest taking a good long look at petrol alternatives. The Ford Focus 1.0 EcoBoost is a terrific car with a great engine and well worth a look. That said it's a little tight in the back seats for two teenagers so I'd say the best all round bet is a Skoda Octavia 1.2 TSI. It's more affordable than the diesel version, damn near as economical and has a big boot and lots of space in the back seats for those teenager-filled weekend runs. Great quality and reliability too.

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Hi Gerry,

To be honest, I just can't recommend a Cross Polo. The standard Polo is a decent little car, albeit a bit slow and a touch noisy. Those problems just seem to be magnified in the Cross Polo though and then there's the fact that for all the plastic cladding and faux-SUV looks, it's just a more expensive Polo underneath and can't tackle mud any more capably than a basic 1.2 Polo Trendline.

So, my suggestion would be this. Either buy a standard Polo or, if you really need something small but with genuine off-road-snow-ice ability then search out either a Fiat Panda 4x4 or a Suzuki SX4 4x4.

Let us know which way you go.

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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

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Hi Cahir,

Really, really good. Put it this way: when I had it on test, I actually asked Kia if I could hang on to it for a couple of extra days. Sharp steering, balanced chassis, spacious cabin (for a coupé) and really well built. 

There's a 1.4 or 1.6 diesel, but get the 1.6 as it's much better to drive, only costs around €1,000 more and there's no CO₂ emissions penalty.

Cracking car all round, really.

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Hi Charles,

Ah, the second-generation Avensis - the taxi drivers' friend. Hardly surprising you see so many on the rank of a Friday night, as they're dependable, comfy and spacious. 

This Avensis was from the last line of big family cars that came mostly as petrols, so the 1.8-litre VVTi engine is the most common. It's a good one too, economical and smooth if just a touch noisy by modern standards. The 2.0 and 2.2 D-4D diesels are rarer, noisier and have iffy clutches - one of the Avensis' few mechanical weak points.

Cabins are robust, hard wearing and massively spacious, which is all good, but listen for rattles from the steering column - not a major issue, more of an annoyance. 

Finally, check the suspension and steering for any wear and tear, they're the only other mechanical weak points.

Actually, this Avensis is also, somewhat secretly, rather good to drive - it used the same steering and rear suspension as the last-generation Celica coupé and while it's no hot-rod, it's better than you might think.

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Hi Michael,

I'd go for the Mazda above the Volvo every time in this case. The old S40 is much smaller and less spacious than the Mazda6 and the Japanese car is also excellent to drive. 

Mazdas are generally exceptionally reliable, but on the 2.0 diesel just watch for low oil pressure and a sticky manual gearshift. Both can be fixed but they are recurring problems. Check the air conditioning system for leaks too.

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Hi Noel,

Yes, unreservedly. One of the most reliable cars around and also comfy, nice to drive and, in the current version, really rather handsome too. The only issue has traditionally been a very limited engine range. On older versions, 1.8- and 2.0-litre petrols were your lot, more recently there has been 2.0 and 2.4 petrols and a 2.2 diesel. Currently, only the 2.2 diesel (in 150- and 180hp forms) is on sale in Ireland. As long as that doesn't bother you, go right ahead.