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Hi Frank,

The new-shape BMW 5 Series is a fabulous car, especially if it has the right equipment, such as a leather interior, etc. The 520d is nothing short of fantastic when new, though we've heard reports that this 2.0-litre turbodiesel engine can have expensive problems as it gets older - especially if oil maintenance is not adhered to strictly. If the one you're looking at has a detailed service history then there's less worry.

However, if you do very small mileage we'd question why you're going for a diesel car at all. The fuel economy might be tempting, but you should look around and see what petrol models you can get for your money too, as modern petrol engines are improving in terms of fuel economy and emissions - and they're generally cheaper to buy and maintain. They're also quieter and far better suited to low mileage use.

Let us know how you get on

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Hi Jim,

Very reliable I hope, as I've just bought a 2006 version! It's essentially unchanged since then and before I bought I did a good deal of research. The most important thing to watch is the oil. It needs to be the correct grade and I'd recommend changing it more often than the manufacturer recommends. At the rear of the engine there's a small timing chain linking the camshafts and it is known to break. This is thought to be down to poor oil maintenance.

Other than that, it seems to be a robust choice.

Let me know how you get on.

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Hi Celsus,

As an overview, Skoda's cars are all reliable, quite comfortable and generally economical. Bigger wheels reduce comfort and the Yeti is less 'soft' on the road than say the Octavia and Superb. Most people stick with the diesel engines, which are very efficient.

If you'd like us to comment on something specific please come back to us.

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Hi Martina,

It's been a while since we drove the Volkswagen Golf Plus in truth, and bear in mind that the one that's on sale right now is based on the previous generation Golf. However, while it's usefully more spacious than the Golf itself, it's not the most practical or versatile car for the money. Nonetheless, it does everything well and that 1.6-litre TDI diesel engine is great. It's relatively quiet and refined, while having plenty of performance. It also is cheap to tax and fuel.

Let us know if you'd like alternative suggestions for your money.

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Hi Donal,

The Discovery is one of our very favourite cars, especially for the way it can carry seven full-sized adults in luxury-car comfort down the motorway. With big mileage like that though you will be rocking up the fuel bills, as a 2.7-litre V6 diesel Disco will only get about 29mpg in normal driving conditions. That said, you won't get any better from any of its rivals, so there you go.

As for reliability, Land Rover has come on in leaps and bounds in this respect recently, but there's no getting away from the fact that its vehicles tend to be more fragile than the Japanese competition. Small electrical niggles are the most likely problems but both the gearboxes and the air suspension can give problems too and those are rather more serious issues. The V6 diesel engine is pretty solid though.

It would be worth checking out both a Toyota Land Cruiser and Mitsubishi Pajero too, but while both of those would be more likely to have better reliability, neither can hold a candle to the Disco's on-road refinement and comfort.

Let us know which way you go

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Hi Patrick,

It’s a bit of a downer, I’m afraid. The 307 was never Peugeot’s finest hour,and suffered from build quality that, if not quite poor, was certainly not the best. The SW is the best version, with lots of space and the option of seven seats, and if you get the 1.6 HDI diesel engine it’s a pretty reliable lump, but expect electrical faults as you go along. Buy it cheap and run it into the ground, would be our advice.

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Hi Thomas,

It seems to be a bit all or nothing with the Voyager and reliability. Some owners skate through life with nary a problem, others have no end of hassle. The primary issues seem to be electrical, including wiper motors, ignition systems, fuel pump controls and electric tailgates and sliding doors. The interior is also pretty fragile in places, and items such as interior lights and instrument lighting can give trouble, as can the radio systems. 

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Hi Dan,

Indeed so. In fact, the CR-V changed utterly in 2002 with the introduction of an all-new model - and the first diesel version was introduced in 2003. Despite it looking rather similar to the first generation model (which debuted in 1995) the second-gen CR-V is bigger, heavier, more spacious and more sophisticated, even if it did retain the old-style spare wheel mounting on the tailgate. 

Early 2.2 CDTi diesel models have an odd fault - the oil warning light can come on even with a full sump of the black stuff. It seems to be a software issue. Listen for groaning or moaning from the rear differential for the four-wheel drive system (all second-gen CR-Vs were had four-wheel drive) as that can mean that the oil in the diff has degraded and the unit is starting to fail.

Other than that, they're solidly built and heartily recommended. 

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Hi Aleksandrs,

The most common fault with the RX 400h, as with any hybrid, is that the fuel economy won't be half as good as you think it will. The last RX model we tested returned just 29mpg overall, a figure we've equalled in both a Land Rover Discovery 3.0 diesel and a Porsche 911 Carrera 4S!

That apart, they're incredibly solidly built, as are pretty much all Lexus models. The high-tech in-car entertainment system, with its touch-screen controller, can throw up an occasional glitch but the only other serious concern lies in the hybrid electric drivetrain. Generally, it's totally reliable but we have heard of an occasional one having an AC/DC power convertor fail, which is a massively expensive job to fix if it does go wrong. As we say, it seems to be an isolated problem but one worth bearing in mind.

Let us know how you get on

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Hi Michael,

The BMW X6 really does split opinion with its SUV-that-wants-to-be-a-coupé styling. It's less practical than the BMW X5 it's based on too. However, it's well made, exceptional to drive and fast. That 3.0-litre diesel engine is a gem too, being both frugal and powerful. I'd personally prefer an X5, but each to their own!