Expert answer

Hi James,

OK, at 25,000km per year, you’re just about over the line for diesel to make good sense for you. Both the Passat and the Avensis are rugged, reliable cars so they’re both good choices. The Passat has the nicer interior and is more comfortable overall, and that 1.6-litre diesel is remarkably economical (we once drove from Galway to Glasgow, via Belfast, and back on one tank…).

However, the Avensis would have an edge on overall reliability, which, when dealing with cars of this sort of mileage and age, could be significant. I’d say, on balance, go for one of the Avensis, but carefully check over the history and condition of each car, and go for the one that’s the best in those regards, rather than mileage or price. Oh, and as with any four-door saloon with high mileage, check to make sure that neither has been previously used as a taxi. We recommend Cartell.ie for a full history check.

Read our Toyota Avensis reviews

Read our Volkswagen Passat reviews

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Hi Janice,

It depends when you bought it. If you bought it at least six months ago, and can show that it’s been taxed and insured for that period, plus you can show proof of transfer of residence, then there’s no import duty (Vehicle Registration Tax) to pay. When it comes to paying road tax, it depends on the model. If it’s a commercial vehicle, and used as a commercial vehicle, then it will cost €333 a year to tax. If it’s a commercial vehicle but used as a private car, then it will be €1,034 per year. If it’s a passenger model Defender, then with CO₂ emissions of more than 225g/km, it’ll cost you €2,350 per year in motor tax.

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Hi Michael,

OK, the NOx charge seems still to be something of an inexact science, not least because accurate NOx values are still hard to come by for some models. Now, we think that a 2010 Octavia 1.6 TDI has NOx emissions of 152mg/km, which would equal a NOx charge of €1,725 (€5 per mg for the first 60mg, €15 per mg between 60 and 80mg, and then €25 per mg per the balance: €300 + €300 + €1,125 = €1,725). That’s on top of the normal VRT charge, of course. 

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Hi David,

OK, we found a few good options, via Carzone, but there are plenty more if you have a look.

How about a BMW 5 Series? It’s top of budget, but we found a 131-reg 520d in SE spec, with auto, air conditioning and cruise. A fabulous car to drive, and perfect for long journeys. Used BMW 5 Series for sale on Carzone. Maybe check out our BMW 5 Series F10 (2010-2017) used car buying guide if that piques your interest.

Or, if you need something a little more practical (and also faultlessly reliable) how about a Mazda6 Estate 150hp diesel? It’s a 2015 car, and they’re as good to drive as they are to look at. Used Mazda6 for sale on Carzone. (Read our Mazda6 reviews here).

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Hi John,

You can absolutely insure it as a private vehicle, but the only issue is that means reverting to the old by-engine-capacity tax system, so it’ll cost you €514 a year. 

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Hi Francis,

It’s actually pretty brilliant — that 1.6 iDTEC engine is one of the best diesels we’ve ever sat behind. It’s smooth, has plenty of performance and is very economical. Plus, Honda engines were never implicated in any diesel emissions cheating, so your conscience can remain untroubled. The rest of the car is rather lovely too. Honda’s quality is a given and that generation of Civic is both massively roomy and massively versatile with those clever flip-up ‘Magic’ rear seats. It’s also good to drive — not as agile as a Ford Focus, but solid and planted, with nice steering feel and good comfort levels, too. The only demerits are a bit too much road noise and a slightly messy dashboard layout.

Read our review of the 2013 Honda Civic i-DTEC here

Expert answer

Hi Mark,

If you’re prepared to wait a bit, there is an all-new Octavia RS coming, which will be available as a plug-in hybrid with 245hp. Now, it will depend on how you rack up those 30,000km as to whether a plug-in hybrid would suit you — if it’s all motorway miles then probably not, but if you do a lot of short-hauls around town, and can charge at home, then it could be ideal.

There’s also the diesel version of the new Ford Focus ST to consider, the new Golf GTI and SEAT Leon Cupra (all sharing their bits and pieces with the Octavia, of course), or what about a Hyundai i30 N — one of our favourite hot hatches? A few reviews to help you decide:

Skoda Octavia reviews

Volkswagen Golf reviews

SEAT Leon reviews

Hyundai i30 reviews

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Hi Laurie,

Well, keeping an old car going is often the cheaper solution, but obviously we can understand the desire for something a little newer. The Rio is a decent choice — reliable and economical — but to be honest it’s a bit of a bland machine. I think you’d be better by far simply upgrading to a newer Kia Ceed. The second-generation model, launched in 2012, feels really sophisticated and is actually very good to drive. With your 60km daily mileage, it would probably be worth looking for another petrol version, rather than going for a diesel. 

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Hi Mark,

The government knows the emissions of each vehicle simply because each vehicle is put through a series of official laboratory tests as part of the process of homologation — the legal process whereby a car is pronounced as passed for sale to the public - and that data is made available by the car manufacturers. As for which is cheaper to tax, it’s down to the CO₂ emissions and we’d have to know which make and models you’re looking at before we could give you a precise answer, but in most cases, for a given car, the diesel would have lower CO₂ emissions and hence motor tax.

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Hi Satveer,

Every 250,000 kilometres or 10 years, whichever comes first.