Expert answer

Hi Colin,

There's not much to choose between the two in terms of overall talent, practicality or reliability, but my instinct would be to go for the Golf - that second generation Focus had a rather plain, unlovely cabin whereas the Golf's is much comfier and more welcoming - important stuff with a long regular journey like yours. The only other thing to consider would be the cabin space - if you often carry tall passengers in the back seats, then go for the Ford, it's much more spacious.

Let us know which you go for

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Hi Meeka,

I personally bought a 2006 Volvo V50 1.6 diesel, which is the estate version of the S40 so I know a little about them. I'm assuming that S40 is 1.6 diesel as well, as most are from that year. The most important thing about this engine is that it is used regularly at motorway speed (to burn off deposits on the diesel particulate filter - DPF) and that oil changes are also regular, and done with the right oil. Insist on a full service history and the more reputable the garage the better.

Make sure the DPF warning light is present when the ignition is turned on and that it then goes out soon after the car is started up. If it's missing completely it means there's a reason someone removed it - walk away.

Other than that I found the car to be very well equipped for the price, making it much better value than a similarly priced Focus or Golf from the same year. It's also more spacious than those cars - though not by much.

Let us know how you get on

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Hi Simon,

That’s absolutely top-value for a 2005 Focus, so the car would want to be in exceptionally good condition and come with a full and complete service history and a decent warranty to command that kind of price. You haven’t given us a year for your Polo so it’s rather difficult to value but we think you could potentially find better value on the Focus out there.

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Hi Richard,

There is lots of good choice out there in the compact saloon world, whether you're buying new or used. The Toyota Corolla, Volkswagen Jetta, Skoda Octavia, Ford Focus Saloon or Mazda3 Saloon all spring to mind and all make solid purchases. Just one thing - for pity's sake, don't buy another Aveo - not only is it cheap, nasty and bad to drive, but it was one of the worst-scoring cars ever on the EuroNCAP crash test.

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Hi Eimead,

Assuming your mechanic already tried HT plug leads and the actual spark plugs the next thing to look into would be injectors.

Hope you get to the bottom of your problem

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Hi Nicholas,

There is no government-funded scrappage scheme in place in Ireland at the time of writing (July 2014), but those that existed in the past were set up to encourage buying a new car, not a used one. Some car makers continue to use the term 'scrappage' for trade-in deals they are offering, but to our knowledge these also focus solely on new car purchases.

Hope that helps

Expert answer

Hi Peter,

Probably about €9,000 on a trade in, maybe slightly north of €10k if you sell it yourself. 

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Hi Louise,

That car has a timing belt, which should be replaced every 125,000 miles (or 200,000 kilometres). We'd recommend changing it sooner than that, however, say every 100,000 miles, so it would be a good idea to have it changed on your car sooner rather than later.

Hope that helps

Expert answer

Hi Christopher,

Yes, absolutely. Mazdas are renowned for their reliability, and the 3 is no different. In spite of sharing all its mechanical parts with the second generation Ford Focus, the 3 generally does a little better than the Ford in reliability and surveys. Perhaps the Mazda engineers do the bolts up a little tighter... Some early models apparently suffered from turbo failure on the 1.6 diesel engine but that seems to be the only thing, bar the usual history checks and damage inspection, to be worried about.

Expert answer

Hi Catherine,

Not necessarily. The 1.6-litre diesel used in the C-Max is an engine used in a huge variety of cars, from the C-Max to the Focus to the Mondeo to various Citroens, Peugeots, Volvos and even the occasional MINI. This means that, by and large, it's a decent engine with good reliability prospects and millions of miles of use in a massive number of cars to reveal any bugs.

That said, there are a couple of issues to watch for and mostly it's to do with the turbocharger, which can occasionally be a weak point. Usually it's down to a failure of the exhaust gas recirculation (EGR) valve, and it can be pretty easily fixed. Watch the parts prices and shop around for quotes if anything does go wrong. Alternators can give trouble too, so be suspicious of any engine or battery warning lights.