Expert answer

Hi William,

We'd be tempted to say that you should be grand - Hyundais in general, and the old Sonata in particular, are built like tanks. That said, with that kind of mileage, you need to make sure that the service history is complete and that all the major replacement jobs (clutch, brake pads and discs, timing belt) have been done. The Sonata has also always been a popular car with taxi drivers so check it carefully for signs of heavy use and abuse. If it all checks out though, and the service history is there, then you should be fine.

Let us know how you get on

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 Ian,

There are a couple of alternatives to the Q7 alright. The Land Rover Discovery is probably the best all-round seven-seat SUV on the market and easily matches the Q7 for driver appeal, cabin space and premium image. The only problem is that Land Rover is still working its way up from a low point in terms of reliability, and while the current Disco is certainly very well built, we'd reckon that a Q7 would be a little bit better in terms of reliability when you're talking about a car that's already a few years old.

In fact, we know of only two issues with the Q7. One, it's apparently quite hard on tyres and two, if it's got an electric tailgate, it can open or close with a mind of its own sometimes, although that should have been fixed in a recall by now.

You could go for a BMW X5 with seven seats, but there's not as much space in the third row in the BMW, so it depends on what you need those extra chairs for. If it's only for occasional use, for kids etc, then the X5 is well worth a look and is a fantastic car to drive. If you need to put adults back there, stick with the Audi. You could downsize to a Hyundai Santa Fe seven-seater of course, which is a reliable, affordable choice but lacking both third row space and the cachet of the Audi.

Or you could steer away from the SUV world altogether and get a Mercedes-Benz E-Class Estate with the extra rear-facing seats in the boot. Bit of an unsung hero that one, and much cheaper to run than a big 4x4. Or, of course, you could do the whole off-roader thing properly and get a long wheelbase Land Rover Defender, but you'll need ear plugs for long journeys.

Choosing between a 2007 or a 2008 Audi Q7 is all down to the price and the individual car. There was a facelift in 2009 that brought some engine updates and cabin and styling changes, but if you can find a good 2007 one, with a full Audi service history, you could be looking at paying as little as €20k. A Q7 for the price of a new Ford Focus? Not bad...

Let us know which way you go

Expert answer

Hi Jim,

Well, the rule is never buy on mileage or even age, but only on condition and history. If the higher mileage car has been better cared for, and has a fully-stamped up service history, then it could well be just as good as the older but lower mileage one. Basically, take both for a thorough test drive and see which one 'feels younger.' If one has had a hard life, and the other an easy one, it should be pretty apparent which is the better purchase. 

Same goes for the 5 Series, but try not to get the less desirable manual. You may pay more for an auto now but it will be worth it come resale time.

Let us know how you get on

Expert answer

Hi Sandra,

Yes, the N47 diesel certainly had its share of troubles with that timing chain, and sadly it’s not as simple as getting it changed at a specific mileage. It’s an engine-out job to change, and they can go without warning.

Because of that, if nothing else, we’d steer you to the 520d with the older engine, but also that’s a genuinely fantastic car, especially with the M Sport body kit - and hugely entertaining to drive. Plus it’s more practical and comfortable than the 3 Series Coupe. Just make certain that it comes with a full service history.

Expert answer

Hi Mim,

By and large, yes. The 1.6 FSI engine was actually pretty peachy to drive, if rather underpowered. As with all underpowered cars, watch carefully for signs of abuse and hard-running by drivers frustrated with the lack of oomph. 

It seems to be a very solidly reliable car, but there are some reports in owner forums of problems with the cam belt tensioner repeatedly failing and needing to be replaced at almost every major service, while there are also some reports that the direct fuel injection system means that the inlet valves can become sticky with carbon deposits. That seems to be about it, though.

Expert answer

Hi John,

Yup, that seems like a good price, assuming the condition is good and all the service history is up to date. Make sure it's been in for a recall to have the steering system looked at and another one to reprogramme the engine control unit to stop it mistakenly kicking in to 'limp home' mode. 

A word of caution though; this car comes from an era when Mercedes-Benz was having a terrible time with build quality, and while the C-Class is generally well-made, we have heard reports of myriad problems, from small things like faulty door locks and handbrake linkages, to major items like engine injectors and ECUs. Buy carefully.

Let us know how you get on

Expert answer

Hi Liam,

OK, the value is a hard thing to put an absolute figure on as the 8 Series is now of an age where it's all about the condition and history of the car. If it's in good nick and there's a full set of BMW or independent BMW specialist stamps in the service book, then you should be looking at a value of around €6,000-7,000, maybe a touch less considering that this car has pretty high mileage.

Thankfully, that mileage is nothing to worry about, with one major caveat and that caveat is engine failure. Some 840ci models used engines with a cylinder bore lined in an alloy called Alusil, which is prone to wear and can cause the engine to go expensively pop. If your car has the other type of cylinder liner, Nikasil, then you should be fine, and by and large the 8 Series is an astonishingly robust car, with very few reported common faults.

Just make sure you check that everything electrical is working correctly, as the 8 Series was kind of on that cusp between the simpler pre-electronic age and the arrival of all the complex modern gadgets.

If you buy it, let us know how you get on and give us as flash of your cool pop-up headlamps!

Expert answer

Hi Ronnie,

It's a bit of a mixed bag, apparently. While the Rexton is a pretty simple beast, there are plenty of tales of electrical issues and minor glitches and we know of one owner who blew two Rexton engines in quick succession - after which he was advised to have it serviced every 10,000km! Other than that, keep a keen eye out for signs of abuse. Rextons are often seen as a cheap alternative to other 4x4s and so tend to be bought for hard work and heavy lifting. If it's been used off-road or on building sites a lot (a common fate for many Rextons) there could be some bodywork damage to deal with.

As for just being a car, they're not much cop to be honest. Noisy, slow and with spectacularly bad handling. You'd be much better off in a Toyota Land Cruiser, even if you have to go for an older model within your budget.

Hope that helps

Expert answer

Hi Niall,

Most modern cars tend to use a little oil and the level should be checked regularly rather than leaving it to the car to tell you. We wouldn't be massively worried about it at this stage, though perhaps mention it to the dealer when it is time for a service.

There's no harm in doing the service a little earlier than planned for added peace of mind.