£4,000 Car Price Hike in Northern Ireland: Is the Rest of the UK Next?

A storm is brewing in Westminster as a new piece of legislation, the Road Vehicles (Type-Approval) (Amendment) (No. 2) Regulations 2025, faces mounting opposition from unionist politicians and Brexit supporters alike.

Critics argue the measure, following on the heals of the Road Vehicles (Type-Approval) Regulations 2025 published last month, are part of an attempt to use the fact that part of the UK, Northern Ireland, has been denied Brexit, to undermine Brexit across the rest of the UK.

The stakes are high: from 1 January next year car buyers in Northern Ireland will be paying at least £4,000 more for the same new cars sold in Great Britain, due to divergent regulations forced by the Irish Sea border and the Windsor Framework. 

Experts say the cost disparity stems from new EU safety regulations applied in Northern Ireland but not in GB—until now.

Both the recent Vehicle Type Approval Regulations seek to change the GB type approval regime to bring it more into line with the EU and thus Northern Ireland whose laws it dictates in this area.

There are two injustices here.

First, Northern Ireland is part of the UK, and the UK Government should never have accepted the affront to our sovereignty arising from allowing the EU to disrespect the territorial integrity of the UK, making the laws for part of our country and cutting us in two through a customs border. People in Northern Ireland should not have to pay £4000 more for the same car than people in the rest of the UK because of the EU.

Second, the fact that Northern Ireland is being abused in this way should not then be used by Labour as a pretext for them seeking to undermine Brexit in the UK by submitting to EU law in GB with all this means for price increases. 

The truth is that no part of the UK should be treated in this way.

This is a moment for the country to stand up and say we are a United Kingdom, and we insist on the same basic courtesies as any other country, that the EU respect our territorial integrity, that it does not seek to make our laws or to divide us into two through the imposition of a customs border.

“If People Are Hit £4000 in Their Pockets, That Might Be Enough to Get Them to Object”

One source close to the issue noted, “If people are hit £4000 in their pockets, that might be enough to get them to object to the division of our country.” The warning underscores deepening frustration among those who believe the United Kingdom’s internal market has been dismantled, replaced by two separate markets: a GB market and an EU/NI market.

Industry Sounds the Alarm

This concern was echoed during an incendiary evidence session on 2 July at the Northern Ireland Assembly’s Economy Committee. Senior car industry representatives made it clear: the cost of just three EU-imposed safety measures is pushing NI car prices £4,000 higher than the same vehicles in Great Britain. They warned this will devastate new car sales in Northern Ireland and all related industries.

“We are gradually losing our unfettered access and participation in the UK internal market, to protect the EU internal market,” one witness stated. “They are now compromising the integrity of the UK single market for our industry.”

Jim Allister MP: UK Internal Market in Jeopardy

TUV leader Jim Allister KC MP has pointed out that the new regulations violates Section 46 of the Internal Market Act 2020 which requires UK ministers to uphold Northern Ireland’s full place in the UK’s internal market and customs territory.

Allister also noted:

“This legislation is contrary to the central tenets of international law that prohibit states… from undermining the integrity of other states which is the necessary result of seeking to cut a sovereign state into two.”

He further added:

“While the purpose of these specific regulations may be to bring the content of GB vehicle type approval legislation into greater alignment with the EU/NI legislation, they still confront us with the ongoing reality of the division of the United Kingdom into two separate markets.”

“Death by a Thousand Cuts”

One Brexit advocate likened the Government’s piecemeal regulatory changes to “death by a thousand cuts.” The concern is that each minor statutory instrument—on its own—may appear insignificant, but collectively they are transforming Britain’s post-Brexit legislative independence and compromising sovereignty.

Already this year, multiple SIs have drawn criticism from constitutional watchdogs for creeping EU legal reintegration, especially in relation to product standards and animal health laws.

The Bigger Picture

As Allister wrote:

“No one who voted for Brexit… voted for [only] Great Britain to leave the EU. Everyone… voted yes to the United Kingdom of Great Britain and Northern Ireland leaving the EU.”

With car prices rising, and the UK’s constitutional integrity again under strain, the question remains: how long before public opinion turns?