Why now could be the right time to lock in your car finance rate

Until a few weeks ago, the story of 2026 borrowing costs looked straightforward. The Bank of England had cut its base rate five times since August 2024, bringing it down from 5.25% to 3.75%. Inflation was falling. Further cuts were widely expected. Car finance rates, along with mortgages and personal loans, were broadly anticipated to become cheaper over the course of the year.

That picture has changed quickly. On 28 February 2026, the United States and Israel launched military strikes against Iran. In the weeks since, global energy markets have been severely disrupted, oil has risen above $100 per barrel, UK petrol prices have jumped by around 14 pence per litre and diesel by 29 pence per litre. And critically for anyone considering car finance, the cost of wholesale money — the funding cost that lenders use to price loans — has risen sharply in response.

This article explains what has happened in the markets, why it matters for car finance APRs, and what it means practically for anyone who is in the process of arranging finance for a car purchase.

What the Bank of England decided on 19 March 2026

Before the Middle East conflict escalated, a Bank of England base rate cut at the March meeting was considered highly likely. Governor Andrew Bailey had described the prospect as a “genuinely open question” as recently as early March. Prior to the start of the conflict, financial markets had priced in further cuts in 2026, and the rate path was broadly expected to fall towards 3.25–3.50% by the end of the year.

Instead, the Monetary Policy Committee voted unanimously — all nine members — to hold the base rate at 3.75% on 19 March. The last time the MPC voted unanimously was September 2021. The statement accompanying the decision cited the Middle East conflict directly: “Conflict in the Middle East has caused a significant increase in global energy and other commodity prices, which will affect households’ fuel and utility prices and have indirect effects via businesses’ costs.”

Crucially, the MPC signalled it was prepared to go further. Several committee members indicated that if the conflict persists and energy prices remain elevated, a “more restrictive policy stance” — meaning rate increases — would be considered. Catherine Mann, one of the more cautious members, said her view had shifted “away from considering a rate cut and towards a longer hold, or even a hike at some point.”

Markets responded immediately. By the end of the week of the decision, investors were pricing in the possibility of the base rate rising to 4.25% or higher by the end of 2026 — a complete reversal from the rate cuts that had been expected only weeks earlier.

The gilt yield surge: why it matters for car finance

The UK government bond market — gilts — is the best real-time indicator of where borrowing costs are heading. When gilt yields rise, the wholesale cost of funding for lenders rises with them, and the rates they charge on consumer credit — including car finance — tend to follow.

The numbers since the start of the conflict are striking. The benchmark 10-year gilt yield rose from 4.2% before the conflict to a peak of over 5% — a level not seen since the 2008 financial crisis. The 2-year gilt yield, which is more sensitive to near-term rate expectations and most directly relevant to consumer lending, jumped from 3.5% to a peak of 4.6% in the weeks following the conflict’s start. The UK’s 5-year swap rate — which lenders use to price fixed-rate products — reached approximately 4.25% on the day of the MPC decision, compared to 3.60% before the conflict began. That is a 65 basis point increase in a matter of weeks.

These are not abstract numbers. Every basis point rise in swap rates and gilt yields feeds directly into the cost of funding for lenders. Fixed mortgage rates, which use the same funding mechanics as fixed-rate car finance, have already responded: the average 2-year fixed mortgage rate rose to 5.32% and the average 5-year rate to 5.37% in Moneyfacts’ 19 March 2026 update — products priced below 4% have essentially vanished. Car finance lenders use similar funding models and their rates will respond to the same pressures over the same timeframe.

As the mortgage adviser Mark Harris put it in the days following the MPC decision: “Lenders look at margins very carefully, so it would be unwise to price their deals too low. Borrowers planning to take out a fixed-rate loan in the next few weeks or months may wish to secure a product now.”

What is driving the market: the Middle East conflict in numbers

To understand why markets have repriced so dramatically, it helps to understand the scale of the energy shock. Iran sits at the centre of global oil and gas supply chains. The Strait of Hormuz — which connects the Persian Gulf to the wider oceans — is the route through which roughly 20% of global oil supply passes. Disruption to this route, or to Iranian production itself, removes a significant proportion of global oil supply simultaneously.

Brent crude oil rose above $100 per barrel following the start of the conflict. UK wholesale natural gas prices rose by approximately 75% in the four weeks between late February and late March 2026. The International Energy Agency warned of what it described as the world’s biggest ever energy shock. These are not market overreactions to uncertainty — they reflect genuine supply constraints with direct consequences for UK energy bills, business costs, and the inflation rate.

The UK is a net energy importer, which makes it more exposed to this kind of shock than countries with domestic energy production. Petrol prices rising 14 pence per litre translates to roughly £1.40 more per fill-up for a typical family car. Diesel rising 29 pence per litre has an outsized impact on road freight costs, which feed through into the prices of goods transported by lorry. The Office for National Statistics is expected to record the knock-on effects in inflation data from April onwards.

CPI inflation was 3.0% in January 2026 — already above the Bank of England’s 2% target. The MPC now expects inflation to be between 3.0% and 3.5% over the next couple of quarters as a direct result of the energy shock. The OECD has forecast UK inflation could reach 4% in 2026 — the second highest in the G7 after the United States. Higher inflation means less room for the Bank to cut rates, and more risk of cuts being replaced with holds or increases.

What does this mean for car finance APRs?

Car finance in the UK is priced by lenders based on their cost of funds — the rate at which they themselves borrow money to then lend to customers. This cost is closely linked to swap rates and gilt yields, which have both risen sharply. Lenders typically build their consumer rates as a margin above their funding cost, and when funding costs rise, consumer rates follow with a lag of days to weeks rather than months.

The path that was widely expected at the start of 2026 — gradually improving car finance rates as base rate cuts accumulated — has been replaced by a path of uncertainty. The base rate is no longer expected to fall in the near term. Markets are pricing the possibility of a rise. Swap rates and gilt yields have already risen significantly. The next move in consumer finance rates is more likely to be upward than downward.

For a buyer arranging car finance over a typical 48-month term, the difference between a rate secured now at current levels versus a rate secured in three months at higher levels could be material. On a £15,000 car finance agreement over 48 months, a 1 percentage point increase in APR increases the total amount repayable by approximately £300–£350 and the monthly payment by around £7–8. On a £20,000 agreement, a 1 percentage point increase adds approximately £420–£480 to the total cost.

None of this constitutes a certainty. Markets reprice daily. The conflict could de-escalate. Rate cuts could return to the table. But the direction of travel as of late March 2026 is clearly away from cheaper borrowing rather than towards it, and the consensus view among economists and market participants is that the expected cuts of early 2026 are not coming anytime soon.

What this means for anyone considering car finance now

The practical implication for anyone who is actively considering car finance — whether they have found a specific car or are at the research stage — is that the window of current rates may be narrower than it appeared a few weeks ago. The rate you can access today reflects market conditions from before the full impact of the energy shock has fed through to consumer lending. The rate you might access in two or three months may reflect a higher funding cost environment.

It is also worth understanding that checking your eligibility for car finance at Carsa does not affect your credit score — Carsa uses a soft search only for the eligibility check. This means you can find out what rate you would be offered without any commitment and without leaving a footprint on your credit file. If the rate available now is competitive, knowing that gives you a clear basis for a decision. If you decide to proceed, you can lock in today’s terms rather than waiting to see whether conditions improve when the evidence currently points the other way.

This article reflects publicly available economic and market data as of late March 2026 and is provided for information purposes only. It does not constitute personal financial advice. Car finance rates vary by individual circumstances, credit profile, lender, and the specific agreement. Carsa is a credit broker, not a lender. Finance is available from 8.9% APR (10.9% APR representative). The rate you are offered may be higher depending on your circumstances.

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Carsa’s free eligibility checker uses a soft search only. Find out the rate you could be offered today without any impact on your credit file. Finance from 8.9% APR (10.9% APR representative). Carsa is a credit broker, not a lender.

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