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Hi John,

The Scenic has been heavily revised and updated since 2007 and really there's no comparison. A new 1.5 dCi diesel is going to be far more comfy and refined than a 2007 model. Besides which, Renault's build quality has also improved in the intervening years so it'll be more reliable too.

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Hi Pat,

You definitely need to change both belts. The recommended change interval is 125,000 miles (just over 200,000 kilometres) or every two years. If yours has never been done then we'd suggest you get it done as soon as possible.

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Hi Kevin,

Because, unfortunately, there is always a lag between the price of crude oil falling and the price coming down at the pump. It’s rarely the case going in the other direction of course, but before you go blaming rapacious fuel companies remember that the actual wholesale price of oil represents only a tiny fraction of the price of a litre of pump fuel – most of it is fuel duty and VAT. In fact, according to the AA, the price is on the way down. The average price for a litre of unleaded has fallen by 5c since June, and the average price for a litre of diesel has fallen by 3c. 

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Hi Kieran,

With that kind of mileage, you could probably look at saving yourself a bit of money by going for a petrol model - as long as the price gap between it and a diesel covers the fuel cost. Get your calculator out...

Of the cars you've mentioned, we'd go for a 3 Series. Few cars are as good to drive and it's the kind of thing you should own once at least. Check it carefully for wear and tear though and don't buy anything without a full service history. 

The only catch could be trying to find one that ISN'T a diesel...

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Hi Simon,

Generally speaking all three of these cars are really well built and shouldn't give you any major troubles. The BMW 2.0-litre diesel engine has some well documented and recurring issues with weakness in the turbo, but if you buy one on BMW's approved used programme, you'll get a two-year warranty that should cover you for any issues. The Diesel Particulate Filter issue on the Audi 2.0-litre TDI engine is usually related to drivers doing too low a mileage at too low a speed for the DPF to heat up sufficiently to clean itself - it's a recurring problem on any diesel car bought by someone who fundamentally doesn't understand how diesels work and are best driven.

I'd say of the three, my choice would be the last-gen C-Class. If you're looking at 2013, try and track down one of the last Edition C models - they were loaded with equipment and got an extra AMG body kit and nice wheels too. Superb to drive, cracking 2.1-litre diesel engine (if it touch noisy) and the only drawback is that they're not very spacious in the rear.

Of course, if it's reliability and reliability above all that concerns you, buy a Lexus IS 300h and you won't go wrong...

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Hi Yi,

As ever, it depends on mileage, condition and history but the taxi thing does push values down a good bit, so I'd say you're looking at a value of between €3,500 and €4,500.

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Hi Mark,

Yes, a little. The Tucson is only available with a 2.0-litre diesel if you want four-wheel drive, and the rated economy for the 2WD 2.0-litre version is 58.9mpg combined, versus 54.3mpg for the 4WD version. And both of them are thirster than the 61mpg 1.7 CRDi 2WD model.

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Hi Mark,

Right, obviously it's always a bit of a scare when you slip on the road and damage your car, and it's natural for the reaction to be "I'd better get a 4x4." Hang on though, because there are 4x4s and 4x4s... First off, the Tuscon. According to the official figures, the 2.0-litre diesel 4x4 Tuscon does 39mpg while the 2.0-litre petrol model does 35mpg. We'd bet that you'll struggle to match those figures on the road and will instead get around 30mpg on average. Also, 4x4 Tuscons are a little tricky to track down in Ireland.

So, as an alternative, why not consider a Skoda Octavia 4x4? You know you like the car, the all-wheel drive system is just as good at finding traction as any big SUV's and the lower, lighter body means you won't pay as heavy a fuel consumption penalty. We've found one for sale on Carzone for just over €10k, so they're not even too expensive.

Worth a look, at any rate.

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Hi Michael,

This question arrives at a timely moment as I've just stepped out of a brand new Polo 1.4 TSI test car. I'd have to say that it's a long, long, loooooong way ahead of a 2000 model year Polo, fine car though that was at the time. I had always felt that the Polo was a little bit of the also-ran of the Volkswagen range, but I think that this latest round of updates, especially on the inside, finally make it feel like the mini-Golf it always should have been.

It's nice to drive, comfy and that 1.4 turbo petrol engine is a gem, giving almost-diesel-like economy but proving revvy and willing when you want to get going. A far cry from the too-sluggish 1.2 petrol Polos of old. So, yes, upgrade - my take is that it's well worth it.

Here's our first drive of the new Volkswagen Polo for reference

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Hi Susan,

For your budget, you could consider an Audi A3 1.9 TDI five-door. Classy, good to drive and very economical. Perhaps not the most spacious car in the world in the back and boot, but it will take a buggy.

Or, how about a car based on the same mechanical package as the A3, but with the boot space to be able to handle a whole creche's worth of kiddy clobber? I speak of course of the Skoda Octavia. A brilliant car, with tonnes of space, and your budget would get you a 2008 model with the 1.9 TDI diesel engine in range-topping 'Elegance' trim. So, comfy then.

Skoda not your thing? Want something classier? I have just the thing... How about a 2008 Volvo V50 estate with the 1.6-litre diesel engine? An easy 50mpg, family practicality thanks to the estate body and your mind will be forever at ease on the safety front.

What do you think?