Expert answer

Hi Mairead,

That’s the 1.6 diesel that’s in almost everything; from Citroens and Peugeots to MINIs, Fords, Volvos and Mazdas. As such, it’s a pretty reliable engine, as long as it’s been properly serviced and fed a regular diet of high-grade synthetic oil. Keep an eye on the fragile water pumps and exhaust gas recirculation valves, though.

As for the rest of the car, tread carefully. That was the last Citroen to come with the legendary Hydragas suspension system as standard, and while that’s terrific from a point of view of comfort, it is a complex and often fragile system. Ditto the C5’s complex electrical system. Make sure it has a full and complete service history and, if there are any gaps or if the overall condition is anything less than excellent, walk away.

Expert answer

Hi Joe,

In general this is a sound purchase, though there are a few things to look out for as ever. We'd advise readers to get as full a service history as possible, even on a relatively old car such as this. On the diesel models check for smooth running and have a look at the condition of the oil. Walk away if it's filthy or there's blue smoke in the exhaust. Black smoke under acceleration shouldn't be an issue though.

The 1.8-litre turbocharged petrol models are known to have issues with their coil packs, while many have air conditioning problems. Just make sure all switches work as you'd expect and check that the air conditioning gets cold within a few minutes. Minor electrical gremlins seem to be this car's biggest problem, but don't let that put you off - just thoroughly check the car you're considering buying.

As ever, we'd advise you to bring along a mechanic to inspect the car before you commit any money.

Let us know how you get on.

Expert answer

Hi Tom,

As the Volvo V50 is based on the Ford Focus it has proven to be quite reliable. The V50 was the subject of two recalls, including a potential fuel leak and an issue with the windscreen bonding. Ensure that any car you're considering has had those items seen to. Isolated issues with the parking brake and the electronic ignition key have been reported too, though you'll soon pick up on that during a test drive.

Owners report that the suspension and electrics give the most problems so test every switch and listen carefully for knocks in the suspension.

Hope that's of some help

Expert answer

Hi Jim,

There's no doubt that the Range Rover Sport (like all big SUVs) are harder on their tyres and brakes than an average car. Parts aren't cheap either and fuel consumption, even on the diesel models, is relatively high - though again, normal for the class.

Early examples were the subject of three recalls concerning brakes, the transmission and rear seat belt buckle, but once the car you're looking at has had those things recitified there shouldn't be an issue. The Range Rover Sport has a below average reputation for reliability, but we know people with faultless examples as well, so perhaps some buyers have been unlucky. Issues seem to come mostly from the electrics and the suspension so check everything is in working order and best to have some form of warranty from the dealer.

If you need more detailed help please do get in touch.

Expert answer

Hi Shane,

This is a job for a really good auto electrician to find, but we do know that some Mercs have such an issue caused by a CD changer. The only way to stop it appears to be physically unplugging it from the car! Take the car to an auto electrician and tell them that and they may find a way to install a switch for it or to fix it properly...

Hope that helps

Expert answer

Hi Karl,

That car is getting on now, so it's unlikely to be perfect. 

Known issues with the 2.2-litre model include a fixable oil leak from the transmission, faulty electric adjustment for the seats (if fitted), clonking from the rear of the car when moving away from rest, unexpected battery discharge and starting issues caused by the steering column lock control module.

Otherwise it's a fairly robust car. Most of the issues above can be fixed inexpensively.

Expert answer

Hi Adrian,

There's no doubt that premium cars of this age can come with costly repair bills. The older they get the more likely something will go wrong, no matter how reliable they are in general. The example you're looking at already has quite high mileage so we'd say budget for a grand or so of repairs a year just in case.

This generation of the A4 was reliable enough. Most problems seem to have stemmed from heating and cooling systems (in particular the air conditioning) and electrics so thoroughly inspect the car - preferably with a bit of professional help. Ensure that the gearbox (assuming it's manual) is smooth and noise-free and that there is no clonking from the front suspension.

Hope that helps

Expert answer

Hi Joseph,

Both those cars are decent family motors, but go into it with your eyes open as large aging SUVs are expensive to run, service and repair. For the most part the Discovery and XC90 are reliable, though there are reports of some early examples of this Land Rover with (costly) air suspension and electrical problems. It's definitely worth getting a thorough professional inspection as offered by Cartell.ie as this should highlight any issues with the car you're considering.

Some XC90s have suspension, transmission and injector problems too - all expensive to fix. Don't be put off by this though, as these issues do not affect all examples sold.

Hope that helps

Expert answer

Hi Noel,

As much as we dislike these, we've not heard of many problems with their reliability - other than early systems from Jaguar.

You could argue that every extra electronic sub-system is a cause for worry, but the modern car is already full of such devices.

Expert answer

Hi Paddy,

Ask the basics first: has this car been crashed? Has it been written off? Ask for a full service history. No harm asking how long they've had it. Ask if there are any known mechanical or electrical issues.

Never be afraid to ask what seems like an obvious question, as then nothing can be hidden or excused by "you never asked me about that" later on!

If you have a specific car in mind let us know and we may have other things to check.