Expert answer

Hi Doteen,

A car's history and how well it has been serviced is important no matter what fuel type it is. The added complication with modern diesels is that their DPFs – and other components - can clog up if they're only used for short trips. I don't believe where you buy the car has any bearing on that. It's all about how the car was used.

Make sure all the warning lights are working and going off when the car is running, insist on a detailed and complete service history and take the car for a decent test drive (again, regardless of the fuel).

A diesel car will be far more economical than a petrol one when it comes to towing and for the most part will be better suited to the job in terms of low-down pulling power (torque).

Nonetheless, if you'd prefer a petrol car, that's entirely doable. Just don't go for a small-engined, lightweight car and expect it to do a good job. Cars such as the Ford Mondeo, Skoda Octavia, VW Passat and others all came with powerful turbocharged petrol engines, though they're much rarer and hence harder to find than the diesel equivalents.

Hopefully that has given you some food for thought but come back to us with more information on the weight of the caravan you're buying and your budget for the car and we can help further if you need it.

Expert answer

Hi Frank,

If Ford won't play ball in giving you a CoC with all the details on it, then next step is perhaps to try to find the information on an officially recognised UK website, such as this one from the Vehicle Certification Agency. If you can find your exact car on there, that should be accepted, but we strongly urge you to talk to Revenue ahead of the NCTS inspection about the documentation you have to hand. 

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Hi Damien,

That's quite the automotive journey! 

Revenue has since attempted to make things a little simpler, so don't worry about the year of the car being imported from the North. All that matters - to avoid paying VAT and import duty - is that the car was imported into the North and used there for, as Revenue puts it "a reasonable amount of time".

We believe three months is fine, though you'll need paperwork to prove all that.

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Hi Elaine,

The BMW X3 diesel is what's called a "mild hybrid", so it can't be plugged in. The plug-in hybrid only makes sense if you can plug it in at home to charge up the battery at every available opportunity. If you don't do that then it's essentially the same as fuelling a heavy petrol-only model.

In general, a diesel car is more efficient than a plug-in hybrid when it comes to long journeys and it sounds like that's what may suit your needs better.

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Hi Mark,

You're absolutely right, and it's something we're trying to do these days as the liquid-fuel consumption figure only tells half the story.

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Hi James,

You're not alone in having this issue. We can find that T-Roc on the MLIT website and get its CO₂ emissions and fuel consumption data, but we cannot see a document showing its NOx rating. The best we could come up with is a spec sheet for the 2025 model on sale today in Japan. Given that this should be the same as the 2022 version, Revenue may accept that. It's 150mg/km.

We've not heard of anyone successfully obtaining this information from a European brand directly, and it's unlikely that Revenue would accept data for the T-Roc sold in a country other than Japan, as there can be regional differences.

Expert answer

Hi Hans,

Not unless it has been specifically calibrated to allow it, no. Toyota's engines in Europe require 95 RON fuel at a minimum.

You may get away with it, as the engine will have knock sensors to allow it adapt, but it is definitely not recommended.

Expert answer

Hi Martin,

The information is supposed to be on this page but it's difficult to find your way around. First up, make sure you use whatever browser you have to translate to English.

Scroll down to the section marked '5. 1. Gasoline passenger car fuel economy'. We found the VW Up in the Volkswagen tab of the Excel file that downloads when you click on 'Imported vehicle (JC08 mode)'. However, that only gives the CO₂ emissions (106g/km) for a single version of the Up, so hopefully that's the correct one.

To find the NOx, we searched the page that link is on for "Volkswagen Up" and found a series of documents, including this one showing a NOx value of 0.013g/km.

Hopefully Revenue will accept both of those documents as proof.

Expert answer

Hi Conor, 

There's a wealth of choice at that price point on the used market really. Here are a few options to consider, many of them early 2025 registrations:

Dacia Duster
Hyundai Kona (the newer model)
MG ZS (newer model)
Nissan Qashqai
Skoda Octavia
Volkswagen Taigo or ID.4 if you fancy going electric

I've added links to our reviews of the cars so you can take a look and see what you like the look of. Come back to us and let me know if we're on the right track here, and your thoughts on each of these as we help you narrow down your search.

Expert answer

Hi Declan,

Nothing has been announced as yet, but I'd put money on the X-Trail adopting the same e-Power improvements as the Qashqai is getting. It certainly won't be before the middle of 2026, though.