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Hi John,

If you're buying an Irish car then you'll be very limited in terms of choice. The vast majority of 2010 Ford Focus on the roads in Ireland are powered by the 1.6-litre TDCi diesel engine, in either 90- or 110hp states of tune). It's not a bad engine with a great performance-to-economy ratio and low road tax. Be aware though, like many engines of this type, it's only really suited to average annual mileage of 20,000km and above - or the majority of its time on a fast-flowing road/motorway. The reason is that its diesel particulate filter (DPF) can clog up and it can be expensive to remedy. There are other components in the engine itself that also gum up if the car is used predominantly for low-speed driving.

Other engines in the 2010 Focus are the 1.8 TDCi diesel and, for low-mileage drivers, the 1.4- and 1.6-litre petrol units. All of these are much rarer. The 1.8 isn't quite as susceptible as the 1.6 diesel to issues, but it's less economical. If you're sure that diesel suits your needs then seek out a 1.6.

Hope that helps

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Hi Irene,

Engine size means less than it used to, especially when comparing a petrol engine to a diesel one. That Hyundai will be more economical and cheaper to tax than the 1.4 petrol Golf from 2008. Saying that, if most of your driving is in town there won't be a big advantage for the diesel, but it should still use less fuel overall.

A larger car such as the i40 is likely to be a bit heavier on things like tyres, but it's newer than your Golf so shouldn't need tyres for a while. 

Hope that all helps 

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Hi Karena,

You're right on the edge for choosing between petrol and diesel. If those miles are mostly on the motorway then diesel may still make sense, but if they're mostly at low speeds then you're right in considering petrol.

Now, the Volvo V40 is a fine choice, but I'm not sure what year you're looking at, as the latest petrol models are powered by a relatively efficient turbocharged 1.5-litre petrol engine, badged either T2 or T3. The EcoBoost Focus is also a cracking car. Try to get a test drive in a few before you decide and come back to us if you need more assistance.

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Hi John,

It depends on the history and condition of course, but somewhere around the €5,500 to €6,000 mark. They're generally worth a good bit less than an equivalent cee'd 1.6 diesel.

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Hi Caoimhe,

Yup, I would too - assuming that you can get a similar quote for insuring the Toyota. That generation of Corolla is actually surprisingly good to drive, and it's far more comfortable and practical than the Corsa, not to mention close to indestructible when it comes to reliability. Plus, I always think it's better to learn to drive on the largest car you can afford to run and insure - it makes things easier when you upgrade in later life.

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Hi Ben,

OK, first off, if it's a second car for short journeys and low mileages, go and track down a petrol model. That shouldn't be too hard if you're looking pre-2008, and it will save you from getting diesel particulate filter problems later.

Of the three, the Tuscon would probably be the most painless to own - it has a great reliability record and the 2.0-litre petrol version is decently frugal. Worth looking at a Kia Sportage of the same vintage too - it's mechanically identical and, to our eyes, slightly better looking.

I'd avoid the RAV4. That generation of RAV was very short on refinement and they tend to need clutch and flywheel replacements as the miles build up. Not a patch on the current, much more sophisticated RAV4.

The X-Trail is well worth a look too. You might struggle to track down the rare 2.0-litre petrol version, but it's worth doing so - it's more reliable than the diesel version and, as long as you go for the second-generation X-Trail, introduced in 2007, you're getting a massively spacious car that's surprisingly good to drive. Be picky though - it has to be that second-gen model, as the first X-Trail was a bit underwhelming. If you can't find a nice one, revert to the Tucson or Sportage.

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Hi Ruairi,

With that kind of mileage you would probably be fractionally better off with a petrol, but the thing is that you're unlikely to find one - petrol sales collapsed in the wake of the 2008 change in the car tax regime, so it's very likely that all you'll find out there are diesels. 

Which is no harm - the 308 was always nicer to drive with the 1.6 diesel than with a petrol (unless you can track down a vanishingly rare 150hp 1.6-litre petrol turbo). You just need to watch for a few key items. Make sure the diesel particulate filter has been kept clean, and make sure you give the car at least one good long drive at motorway speeds every week to keep it that way. Check that the cooling system is working properly and that the (plastic) water pump is in good nick. Check the gearbox too - the five-speed manual can sometimes get jammed in neutral.

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Hi Caroline,

The manual version of the CLA 180 Urban returns 51mpg (5.5 litres/100km) on the combined cycle. Our data seems to suggest that the DCT automatic model is the same.

In case you weren't aware, official 'combined cycle' figures are to be taken with a pinch of salt for most cars. This one would do well to top 40mpg by most drivers we reckon.

Further reading:

Mercedes-Benz CLA Shooting Brake review

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Hi Enda,

Yeah, he's definitely better off with the petrol version, not least because Toyota's 1.4 diesel is not the best, but its 1.33 petrol is a cracker. You might need to do some digging to track one down though - they're thinner on the ground on a 2010 plate than the diesels. 

Now then, Auris versus Corolla. Yup, they're the same size inside. The boot on the Auris is a little smaller but then it's also more versatile thanks to being a hatchback. The point about air conditioning is probably right - standard spec on Toyotas tends to be quite stingy and Corolla saloons are basically built for emerging markets (no, seriously, we're the only Western European nation that still sells them) so tend to be even more basic again. 

I'd say you'll need to find about €3-4k to finance the upgrade from a 2008 Corolla to a 2010 or 2011 Auris.

Relevant reviews:

Toyota Auris review (2013)

Toyota Auris review (2010)

Toyota Corolla review (2013)

Toyota Corolla review (2010)

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Hi John,

Yeah, €12k sounds about right for a 12-reg Insignia diesel, as long as it has a full service history and is in good nick. I'd be looking to knock a good bit off if it's as far back as an 09, though.

Sadly, you're not going to get much for the Laguna - it's a car the trade just doesn't like much, so even if it's in exceptional condition, you'll probably get €1,000 to €1,200 at best.