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Hi Peter,

I'm afraid that is one of those problems that cannot be diagnosed remotely. You'll have to get a qualified mechanic to drive the car with you in it to point it out.

Best of luck

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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 Richard,

The Alhambra would be my choice here. A budget of €6,000 won't get you the current model, but it should find you an old one and they're still good. SEAT's reliability is pretty solid and you should be able to find one at a lower mileage than an equivalently priced (and mechanically identical) Ford Galaxy. 

It would be worth keeping an eye out for a Ford S-Max too, though €6,000 is the very, very bottom end for S-Max prices, but keep your eyes peeled and haggle hard and you might just land a nice one. 

And, as I always advise anyone looking for a seven-seater, there's always the option of a Mercedes-Benz E-Class Estate with extra seats in the boot...

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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 Liam,

By and large, yes. Some minor electrical glitches here and there but Renault had really gotten on top of he reliability problems that plagued the previous Mégane.

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Hi John,

Yup, a small diesel sounds like it should be ideal for you. Depending on what kind or size of car you need I'd recommend either a MINI Cooper D 1.6 (small and sporty), Opel Astra 1.3 CDTi (slower, but more spacious), Toyota Auris 1.4 D-4D (similar to Opel but probably more reliable) or that old favourite the Volkswagen Golf 1.6 TDI BlueMotion (ultra economical). Or, if you need more space how about a Skoda Octavia Combi estate 1.6 TDI or a Citroen C4 Picasso 1.6 HDi?

Help us with your needs and we'll narrow that down a little!

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Hi Gabriel,

Dacias are fine, to be honest, you just have to make sure you know what you're getting into. They're not sophisticated, nor are they especially modern, but they're cheap and genuinely quite cheerful. Best of the bunch is the Sandero supermini, which combines decent build quality with surprising refinement and a  emptingly low price.

The Duster SUV is also pretty good, albeit it's quite an old design now and lacks things like electronic stability control as standard. Still, it's rugged, tough and refreshingly simple. The newer Logan estate and Stepway crossover are just variations on the Sandero theme and are there for those who need either an enormous boot (Logan) or a bit of 4x4-esque style (Stepway).

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Hi Nicola,

Probably the best bet for you is to simply cross the Toyota showroom and get yourself into a Corolla. It and the Auris are pretty much mechanically identical, but the Corolla has a much bigger boot, albeit it's not a hatchback, so perhaps not quite so versatile as the Auris. Or, if you're considering buying new (or at least nearly new), why not check out the Auris Sport Tourer estate? Nice car, big boot, reliable, can't go wrong.

Let us know which way you go in the comments below

Expert answer

Wow, how much detail do you want? Here goes...

Saab 92 - the first Saab on sale. Two-stroke engine made it a bit impractical.

Saab 96 - like a 92 that real people could drive. Sweet V4 engine. Lots of rallying success.

Saab 99 - the first truly modern 'big chin' Saab. Gorgeous outside and in and with tearaway turbo engine. Fab.

Saab 900 - a highly developed 99, stayed in production for ever. Lovely convertible version.

Saab 9000 - some say it's not a proper Saab as it shared a platform with Fiat/Alfa/Lancia. Ignore them, as it's lovely, big, comfy and solidly built.

Saab 9-3 - the first General Motors Saab. Opel Vectra-based. Lovely cabin but flaccid chassis.

Saab 9-5 - bigger Saab but also Vectra-based. Better than you'd think but major reliability issues.

Saab 9-3 - second-gen 9-3 was based on the 2002 Vectra but not actually much better. Handsome estate version though.

Saab 9-5 - massive second-gen 9-5 was based on the Opel Insignia, really rather good and, sadly, the last car Saab ever made.

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Hi Ian,

If it's space you're looking for, go for the Superb, as it's massive inside. No reported electrical problems, but watch for high front tyre wear, paint peeling away from bumpers and flimsy fuel filler caps. There are some reports knocking around of clutches and flywheels failing, but these seem to be very isolated and not a recurrent problem. The Superb's a great car though - smooth and comfy, very spacious and one of the best cars on the market. Go for the Combi estate for even more boot space and nicer exterior styling (in our opinions!).