Expert answer

Hi Alexander,

We've looked those cars up. Both are BMW M140i with slightly different specification, but both powered by the same 3.0-litre petrol engine. 

Using Revenue's website to check the tax rates by reg does indeed show the discrepancy you've found and it suggests that the 171 car's emissions are in the 101-110g/km range, which is just impossible with that engine. We're not sure how that could have happened.

Someone somewhere put the wrong details in the system for that car. 

Expert answer

Hi Neil,

For cars, the motor tax band is determined by the CO₂, as you said, but for vans it works differently. When a van is used purely for commercial reasons it's a flat rate of €333, but if the van is actually to be used for any private reasons, it has to be taxed as a private vehicle.

And for some bizarre reason, the rate it is then taxed at is determined not by its CO₂ rating, but by its engine size. Hence the weird situation you've described above where the Peugeot van's engine (1,501-1,600cc in size) means it costs €514 a year to tax for private use, while the CO₂ emissions of the Rifter (141-150g/km) mean it only costs €270 a year. 

Hopefully that explains what's happening anyway, weird as it seems. 

Expert answer

Hi Paul,

As a passenger vehicle, the VRT cost will depend on the Open Market Selling Price (OMSP) and the VRT band. The latter is determined by the CO₂ rating, which for that model means the highest with emissions of well over 191g/km. VRT is therefore 41 per cent of the OMSP.

Unfortunately, the OMSP is nothing to do with the price you pay for the car. It's the figure Revenue believes the car to be worth in Ireland. That's not very easy to guess at for a rare model such as the Defender. For the purposes of our calculations let's assume it's €40,000, but you may know Irish values of these cars better so adjust the figures accordingly.

At an OMSP of €40,000, the VRT alone would be €16,400.

You will also have to pay the NOx levy on top of that. This can be up to €4,850 for diesel models and unfortunately the Defender is likely to attract the top value.

Assuming the Defender was imported into Northern Ireland and used there by someone (i.e. not just a car dealer), then you should not be liable for VAT or customs duty, but you will need to be able to prove its status to Revenue when importing it.

Motor tax in Ireland will be at the top rate of €2,400 per year.

A few useful guides for you:

Motor Road Tax Prices in Ireland Explained
Guide to Importing a Car from Northern Ireland
How Much VRT is Paid in Ireland?

Expert answer

Hi Guy,

It’s never easy to estimate the VRT on rare cars such as this, primarily because the calculation relies on what Revenue deems the car to be worth registered in Ireland. That’s referred to as the OMSP (Open Market Selling Price), and it’s very difficult to predict what value it will place on a rare model such as that Porsche. Let’s take it to be €50,000 for our calculations, but you need to be prepared for a drastically different number from Revenue.

That car’s high CO₂ emissions will place it in the highest band for VRT, at 41 per cent of the OMSP, so that works out as €20,500.

Expert answer

Hi Sean,

I'm afraid we don't yet have any pricing information on the car in Ireland. KGM has confirmed that the regular petrol model we tested will not be offered for sale on the Irish market due to high CO₂ emissions and the resultant high price.

However, a hybrid version of the Acyton is planned and that should go on sale in Ireland in early 2026. We do not have prices for it as yet. 

Expert answer

Hi Damien,

We need to obtain the VRT band and guess the OMSP (Open Market Selling Price) first up. The latter is the value Revenue reckons the car is worth registered in Ireland and there’s no sure-fire way to obtain that. For the sake of our calculations, let’s say it’s €3,000.

Although the CO₂ rating of the 1998 525td might suggest it’ll be in a lower VRT band, the Irish government ‘uplifts’ the values of older models so that they can be compared with cars tested on the newer ‘WLTP’ system, and that will mean VRT of 41 per cent for this car.

If the OMSP is €3,000, then the VRT would be €1,230.

We can’t find a value for the NOx emissions, unfortunately, and if the car doesn’t have that figure on its certificate of conformity then you could be charged the maximum, which is a huge €4,850 for diesel cars.

Expert answer

Hi Paul,

We need two things to estimate the VRT (and please note that we can only provide an estimate, and you need to take all factors into account for yourself). First is the CO₂ emissions rating to determine the VRT band. That will vary from model to model, even for a single variant such as the 530d.

Our data shows that car has an NEDC CO₂ rating of around 139g/km, but Revenue will ‘uplift’ that using its formula in a bid to make it comparable to WLTP-rated cars. That means it considers it to have CO₂ emissions of about 172g/km on importation.

This means Band 19 for VRT at 35 per cent.

That’s 35 per cent of the OMSP, the Open Market Selling Price as determined by Revenue, which is not always very easy to guess at, but a quick look at Irish classifieds suggests in and around €18,000, meaning VRT of €6,300.

Don’t forget you’ll be liable for the NOx levy as well, which will be high for that car.

Expert answer

Hi Barry,

If it’s registered as a commercial and is being imported to be registered as one in Ireland, then the VRT should be 13.3 per cent of its OMSP. That’s the Open Market Selling Price Revenue believes the vehicle to be worth in Ireland, which can be tricky to estimate, especially for something so rare, relatively speaking.

If Revenue says it’s worth €35,000 then the VRT as a commercial would be 13.3 per cent of that, or €4,655.

If this is a private vehicle then the VRT rate depends on the CO₂ emissions, and it’s likely to be in the top band, at 41 per cent. At the same OMSP, that would be a VRT bill of €14,350.

Don’t forget about the NOx levy, which will be high for that vehicle, but if it has been registered and used in Northern Ireland you shouldn’t have import duty or VAT to pay.

Expert answer

Hi Aileen,

Motor tax for cars only goes by the engine size if it was registered before 2008. If the 1.6 you’re talking about is older than that then the annual motor tax should be €514 (assuming the engine size is 1,501-1,600cc).

If the car is newer, then its tax goes by its CO₂ emissions. We’d need to know full details of the car before we could look that up for you, as the engine size and type alone aren’t sufficient.

Read our Motor Tax Prices in Ireland Explained page for more information.

Expert answer

Hi Mark,

As I’m sure you realise, we can only guess at the OMSP (Open Market Selling Price) that Revenue will place on such a rare car. And the VRT calculation hinges on that. Let’s say it’s €25,000, and that its CO₂ emissions put it into the top VRT band at 41 per cent. That would mean a VRT bill of €10,250.

Don’t forget about the NOx levy on top of that, which is likely to be the top €600 limit for petrol cars, and of course import duty and VAT if the car is coming from England, Scotland or Wales.