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Hi Rowland,

OK, there are a lot of parameters to go with here, but the basics are that you need a car that's cheap to buy (so it can't, sadly be too new), has affordable running costs and won't break down every time it rains. I reckon that gives you a choice of three or four key models: Honda Civic, Toyota Corolla or Auris, Kia cee'd or Hyundai i30.

Have a shop around and you should be able to find several of those all well within your purchase price range, while they all have efficient engines and excellent reliability records. In the case of the Kia and the Hyundai, they also have lengthy warranties, which, even if there's none left on the one you buy, at least means that they're more likely to have been looked after. My personal choice would be the Honda. Track down a nice 1.4 petrol Civic and I don't think you'll look back.

Let us know how you get on

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Hi Gary,

Very, very hard to go wrong with a Golf for your starter car. Cheap to buy and maintain, but if you get a nice one, clean it and care for it, it'll look every bit as classy and desirable as a brand new one. The 1.4 has all the performance of a slow moving glacier, but that's probably why the insurance is so cheap. It's also worth having a look for a nice 1.4-litre MINI One, if only for the sheer fun of the thing, or if you wanted to be really, really sensible (and shave even more off the insurance) you could track down a 1.0-litre Toyota Yaris.

Let us know how you get on

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Hi William,

The new Lexus NX will be unveiled in public for the first time next month (April) at the Beijing motor show in China. It is possible that we'll get a static preview of the car ourselves in May in London before driving it in September for review. The NX goes on sale in Ireland in October.

Let us know if we can help with anything else

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Hi Michael,

The official average economy for a 2005 1.9 TDI 105hp Golf is 53mpg, and assuming the engine has been reasonably well cared for down the years, I'd say you wouldn't have too much trouble matching that figure in day-to-day driving. As for switching to 1.4 petrol, it kind of depends on your driving style and habits. If you're doing lots of long journeys, especially ones with lots of motorway mileage, then diesel is a no-brainer. If your driving is mostly done at low speed, around town, for short hops then it might well be worth sticking with petrol. Basically, you need to get your pen and paper out and work out what mileage you do, and then compare the prices you're seeing for both the petrol and diesel versions of the cars you want. If the saving on the fuel isn't more than extra price of buying the diesel car, then it's worth considering sticking with petrol.

Let us know how you get on

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Hi Matthew,

Wow, that's a brave decision. First off, the RX-8 is and always will be one of our favourite cars - light, agile, fun and with that screaming rotary engine up front. It's a gem of a car, and pretty reliable too.

Now the bad news. It's going to cost you a fortune to insure. You say you're starting to learn driving, but you don't specify your age. If you're under 25 you may well find it impossible to get any cover, but if you still live at home you may be able to do the old named-driver-on-your-parents-insurance trick. Even if you're over 25, as a first time driver your insurance is going to be well and truly loaded - the RX-8 is a proper sports car (and occasionally tricky in the wet) and most insurers will not be keen on insuring a novice on such a car.

Assuming though that you can sidestep those hurdles, go for it! If you start your driving career with an RX-8 you'll be getting off to a terrific start. One word of advice - invest in a high performance tuition course to help you better understand the ins and outs of driving a fast, rear-drive car. It'll make you a better driver anyway and it could save your life.

Let us know how you get on

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Hi Peter,

A brilliant car, albeit one with a couple of shortcomings relative to its German rivals. It's probably the best-looking car in the class, and the 500-litre boot is a match for the BMW 5 Series Touring and Audi A6 Avant (though much smaller than that of the Mercedes-Benz E-Class). It's utterly delightful to drive too, better even than the much-praised BMW, with brilliant steering and a comfy ride.

On the downside, the interior is a step behind the Germans (not enough space, old-fashioned touch-screen infotainment system, narrow front seats) and the fuel tank is on the small side, limiting your touring range and making the car feel thirstier than it actually is. The 2.2-litre diesel engine in 190hp form is the best all-round to go for, but the lower power 163hp is a bit cheaper to buy and you'll hardly ever notice the difference in day-to-day driving. Or, you could get the best version; the 272hp 3.0 D V6 diesel – a properly quick, practical car that.

Here's our road test of the XF Sportbrake

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Hi Jim,

I'd say you're just on the cusp of switching from petrol to diesel, but the 1.2 turbo petrol Qashqai is an excellent car, and on paper you should be able to get good enough economy out of it to not need to pay the extra for the 1.5 dCi diesel. Maybe ask your Nissan dealer if you can take one for a 48-hour test, to see exactly how good the economy is on your usual driving routes.

Let us know how you get on

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Hi Keith,

It really just depends on two things; her driving style and habits and what kind of condition the car is in. If it's in good nick, her average mileage is quite low and she's able to maximise the economy from that engine, you may just be better off spending a little bit of money getting the car thoroughly serviced and spruced up and sticking with it. If though her mileage is creeping up or you feel that the car is starting to age then it could well be worth trading in for a newer Passat. The current model is essentially the same car, but updated and re-skinned and the 1.6 TDI diesel gives it terrific economy.

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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.