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Hi Michael,

If your Kia really has had only one service since 2014 then I'm afraid its warranty is unlikley to be honoured - that does not conform to the terms and conditions.

However, it may well be that the previous owner did all the servicing with Kia directly, which means there will be an electronic record of it all. To check this, call your nearest Kia dealer with your car details and they can check for you.

Fingers crossed, but in truth, the cee'ds have proven to be very reliable so I wouldn't panic.

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Hi Garret,

I think a realistic trade-in value is going to be around €8-9,000, with a private sale price of around €10,500.

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Hi Philip,

The short answer is that there are some benefits to using additives, but they’re not a miracle cure. Some additives, such as Redex, STP, or Dipetane, can apparently help to reduce the build-up of carbonised particles of soot and burned fuel on the insides of your engine, which can lead to improvements in reliability, fuel economy and emissions.

That said, there’s little here that’s scientifically proven. The benefits of additives tend to be more word-of-mouth than provable fact, but there’s certainly no harm in using them and if you notice a benefit, well that’s all to the good.

I would suggest that you’re better off sticking to a strict service regimen, using original parts and a qualified technical, than relying on additives though. And of course, as you already know, diesels need to be driven regularly to stay in good condition.

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Hi Kev,

It should be perfect for your work and that 3.0-litre engine is pretty solid. Watch for turbo trouble though and keep an eye on the electrics. If it has a full service history it should be fine. 

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Hi Marlen,

It's impossible for us to accurately assess a car that we haven't seen, but for a small premium such as that it could well be worth having the newer car. That said, one should never buy on age and mileage, but on condition and history, so go for whichever one is in better condition and which has the more complete service history.

As for potential mileage, if you keep a car properly serviced and cared for (Toyotas especially so) the sky's the limit...

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Hi Patrick,

Tough to call. It is the unloved engine, which will hurt resale, and the mileage is about twice the average, but even so €7,000 sounds frighteningly cheap. Does it have a full service history? Have you done a history check with Cartell.ie?

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Hi Seamus,

If you mean the current-shape C-Class then we've heard no horror stories. Electrical issues are common, but they tend to be small irritants rather than a major problem. Just make sure you buy it with a full service history, preferably a Mercedes dealer history. 

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H Paula,

OK, big, big caveat first: we haven’t seen the car and don’t know the car so we can only talk in generalities. Off the top, that sounds like a really good buy, Anything that comes with a fully stamped up service history is off to a good start, and if it’s just passed the NCT then that’s another good sign. The MkII Focus was always a well-built car (always sold well in Germany, which is never a bad sign), but the 1.6 TDCi diesel has a couple of weak points — the water pump and oil pumps can be delicate, and it needs a steady diet of high-grade, preferably synthetic, oil to stay healthy. As this one has a full history, then it’s probably going to be fine, but it’s worth bearing in mind anyway.

The only thing that gives us pause is the price. €5,900 is pretty cheap for a 2010 Focus, even if it’s quite a basic one. Mid-range price for a car like that is normally closer to €7,000 or even €9,000. So the question is why so cheap? Obviously, it could just be priced low for a quick sale, but it’s worth keeping that question in mind when you’re inspecting the car and its paperwork. Make sure you get a history check done by the likes of Cartell.ie before you buy and let us know how you get on.

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Hi Derek,

OK, you haven’t told us the year of your Mazda so that makes it a little hard to value, but seeing as it’s the 1.8 petrol I’m going to guess that it’s around 2006-2007. If so, then I’d say that the €4,400 trade-in offer is actually pretty good.

As to what car to get, if you’re looking for a small hatch then it’s very hard indeed to look past the Volkswagen Golf. It’s one of the world’s best-selling cars for a reason, and as long as you buy one with a full service history and keep it looked after, you should get plenty of years of reliable service out of one yet.

Ditto for the mechanically identical SEAT Leon and Skoda Octavia. The Opel Astra GTC is a fine car in many ways — handsome, good to drive, decent quality, but it was hamstrung by poor diesel engines (other than the range-topping 2.0-litre) and unless you’re looking at the 1.4 petrol turbo model, it’s possibly not the best purchase.

The Focus is definitely a good buy, and that TDCi diesel is frugal to run, but you just have to be slightly cautious about diesel power right now. If you’re not doing big miles, you’d be better off with a petrol car.

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Hi Eileen,

It will depend on the service history, but probably about €7-8,000 as a trade-in.