Expert answer

Hi Daniel,

The new NOx charge is indeed in place now, and came into force on Jan 1st. It will depend very much on how old the Mondeo you’re looking at is. Assuming that it’s a 2017 model, then the NOx charge will be pretty small — €180 on an official NOx reading of 36mg/km. However, older versions have much high NOx levels so will be much more expensive. If you could give us a precise year for the car you’re looking at, we could get a more precise answer. Cartell.ie is probably your best source for accurate NOx figures — just put the reg number of the car in the search box. 

Expert answer

Hi Bryan,

It’s not going to be too bad, actually. A 2016 Verso will run you about €2,400 in terms of VRT and, unusually, it’s one of those older diesels that’s not too bad in terms of NOx, with an official figure of just 24mg/km, meaning an extra charge of €120 on top of that.

Expert answer

Hi Veronica,

That car should (emphasis on the should) have NOx emissions of just 30mg/km so will cost just €150 extra on top of the normal VRT. 

Expert answer

Hi David,

It doesn't need to be changed until it has done 200,000km or it is 10 years old. The price will vary considerably depending on where you get the work done, but we can tell you that it should take no longer than three hours.

Expert answer

Hi Gerry,

In terms of tax there won’t be any changes before the Budget in October, and there are unlikely to be major changes then. There have been rumblings of a change in the diesel tax system, but the various departments are known to be hesitant to introduce a third motor tax regime on top of the two we already have. A general increase in the cost of motor tax, within the existing bands, is quite likely though, as the Government starts to push people towards electric motoring.

In terms of fuel costs, prices at the pump have spiked up in recent weeks thanks to the Trump-Iran standoff, and this week the average per-litre cost of diesel rose to €1.31. That is likely to continue to rise as long as tensions in the Middle East, and indeed in the White House, remain high. 

Expert answer

Hi Kevin,

It would have been useful to have more details about the car, such as age and engine, as it varies considerably. I'll deal with the 2013 on model, which is still in production.

All 1.2-litre petrol engines:
 - up to Sep 2014, 180,000km/10 years
- Oct 2014 to Apr 2017, 175,000km/10 years
- from then on, 100,000km/6 years first, then every 200,000km/12 years

1.5-litre BlueHDi diesel: every 180,000km or 10 years

All 1.6-litre diesel engines: 175,000km or 10 years

All 1.6-litre THP petrol engines: timing chain

1.6-litre VTi petrol engine: 150,000km or 10 years

All 2.0-litre diesel engines: every 180,000km or 10 years

Expert answer

Hi Donal,

Well, fuel consumption depends very much on your own driving style and where (and to an extent when) you do most of your driving. That said, in general, we wouldn’t expect that 1.0 TSI engine to be much thirstier overall than the 1.6 diesel. In our tests, both engines are in and around as economical as each other and you should expect to get around 50mpg from either with a light foot. The diesel may be a little better than the petrol option at a sustained high-speed cruise. However, with such low annual mileage, we suspect that the petrol engine will cost less to maintain in the long run. It's probably the best option for you.

Expert answer

Hi Philip,

Every gearbox is different and our advice would be to follow the manufacturer advice. For life means for life, with no limit on mileage, odd as that sounds.

Expert answer

Hi Brian,

It’s a tricky one. The problem is that a 330e gets amazing fuel economy as long as you keep it plugged in as much as possible (which would work nicely for your short commutes), but that all goes to pot a bit on long motorway journeys (which is obviously not going to be good).

We think it’s a good idea to start moving away from diesel and towards hybrid and electric, but you’re going to struggle — overall — to match your A5 TDI’s economy with the 330e. Now, the thing is you can maybe make this work from the perspective of overall running costs. If you can charge up at work as well as at home, and stick to electric-only power as much as possible for your three short commuting days, then it’s just possible that might balance out the thirstier longer runs on the other two days.

Unfortunately, we can’t be more certain than that — the only way to know for sure is to try it out. If you don’t fancy making that leap of faith, then I guess it’s back to 320d diesel power and wait for truly long-range electric cars to arrive.

Expert answer

Hi Roy,

You haven’t said whether this is a BMW 420i (petrol) or a 420d (diesel), so we’ve checked both. For a 420d diesel, the VRT charge is going to be in the region of €3,900 depending on the specific spec of the car. For a petrol 420i, it’s going to be pretty similar — around €3,500. There will be NOx tax charges on top of that, but thankfully even the older 4 Series diesel models were very NOx-efficient, just 23mg/km officially, so that’ll only be an extra €115 onto the VRT for the diesel. Oddly, the petrol 420i was actually a little worse off for NOx (28mg/km) so that’ll cost you €140 extra.