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What factors affect car finance interest rates?

Roman Danaev25 October 2026

Your car finance rate depends on your credit history, what you can afford, how much you borrow, how long you borrow for, the type of finance, the car and the lender's own pricing, while Bank Rate moves lenders' pricing up or down over time. That's why the APR in an advert can differ from the one in your own quote. Most of these factors are ones you can compare or change before you apply, so a high first quote isn't the final word.

Most car finance is hire purchase (HP) or personal contract purchase (PCP) rather than a loan, because the lender owns the car until the final payment, but this guide covers personal loans too.

What's the difference between the interest rate and the APR?

The interest rate covers only the interest a lender charges, while the annual percentage rate (APR) adds any compulsory fees and shows the total as a yearly rate. You can think of the APR as the price tag for comparing agreements on the same basis.

A car finance quote can therefore show two different figures. For example, £12,000 over 48 months at a 9.9% fixed interest rate works out at about 10.4% APR, because of how the interest is calculated over the year. Add a £195 compulsory fee and the APR rises to about 11.3%. These figures are illustrative, not a quote.

How does your credit history affect your rate?

Your credit history can raise or lower the APR you're offered, because it shows lenders how you've handled borrowing before. Missed payments, defaults or a county court judgment (CCJ) may narrow your choice of lenders and lead to a higher APR.

A thin credit file isn't the same as a poor one. If you haven't borrowed much before, a lender simply has less to go on.

The score a credit reference agency shows you doesn't decide your offer on its own. Each lender uses its own criteria. See what credit score you need for car finance for more.

Why do income, spending and existing debts matter?

Your income, spending and existing debts show a lender what you can afford, which affects whether you're offered finance and at what rate. Lenders have to check that you can repay without financial difficulty.

How you earn can matter too. Some lenders treat self-employed income, zero-hours contracts or a recent job change differently from a long-standing salaried job. They may ask for more evidence, such as bank statements or tax returns.

A joint application, or a guarantor where the lender allows one, may widen your options, though both people then share responsibility for the debt.

Does a bigger deposit or a cheaper car lower your car finance rate?

A bigger deposit or a cheaper car means you borrow less, which cuts the interest you pay at the same APR. A bigger deposit doesn't guarantee a lower APR, though. Some lenders set rates in bands by loan amount, so ask whether a bigger deposit would change your rate before you commit extra cash.

Does a longer term make car finance more expensive?

A longer term usually lowers your monthly payment but raises the total interest, if the amount borrowed and APR stay the same. The lender may also quote a different APR for a different term, so compare each quote's total amount payable.

Worked example: deposit and term

Here's how a £15,000 car could look on HP at the same 12.9% APR. These are illustrative figures, not a quote, and they leave out any fees.

DepositAmount borrowedTermMonthly paymentTotal interestTotal repaid (excl. deposit)
£0£15,00048 months£396.44£4,029.12£19,029.12
£3,000£12,00036 months£399.69£2,388.84£14,388.84
£3,000£12,00048 months£317.15£3,223.20£15,223.20
£3,000£12,00060 months£268.12£4,087.20£16,087.20

The £3,000 deposit saves about £806 in interest over 48 months. Stretching the same £12,000 from 36 to 60 months cuts the payment by about £132 a month but adds about £1,698 in interest. In real quotes, the APR may also change between these options.

Do HP, PCP and personal loans have different rates?

HP, PCP and personal loans can carry different APRs because lenders price each product separately. Their structures also change what the same APR costs in total.

Hire purchase (HP) spreads the amount you borrow over fixed monthly payments, so the balance and the interest on it fall steadily.

Personal contract purchase (PCP) defers part of the balance to an optional final payment. Monthly payments are usually lower than HP for the same car, but the lender charges interest on that deferred balance for the whole term. At the same amount, term and APR, PCP usually costs more interest than HP.

A personal loan is unsecured, so its rate often depends more on your credit profile and the amount you borrow.

See what APR is on car finance and what counts as a good APR for how to judge a quote.

Does the car you choose affect your finance rate?

The car you choose can affect your finance rate through its age and mileage, any manufacturer offer on it, and the type of lender that finances it.

  • The car's age and mileage. Many lenders set a maximum age for the car at the end of the agreement, and some limit mileage. An older car may mean a shorter term or fewer lenders, though not always a higher APR – see car finance on older cars.
  • Manufacturer and dealer offers. A carmaker's finance arm may subsidise low-rate or 0% APR deals on new or nearly new cars. Check whether taking the offer means giving up a cash discount, and compare the total cost either way.
  • The type of lender. Manufacturer finance arms, banks and specialist lenders each set their own rates and criteria. Specialist lenders may accept more credit histories, often at higher rates.

Does Bank Rate affect the car finance rate you're offered?

Bank Rate, the Bank of England's base interest rate, can influence the rates lenders set for new car finance. The Bank of England says lenders normally adjust their rates when Bank Rate changes, but each sets its own pricing, so a change won't move every quote by the same amount or at the same time.

Can your car finance rate go up after you sign?

A fixed-rate HP or PCP agreement keeps the same rate for the whole term, even if Bank Rate rises. Most HP and PCP agreements are fixed, but check yours to confirm. See whether car finance rates are fixed or variable.

What happens if you miss car finance payments?

Missed payments damage your credit history, which can mean higher rates the next time you borrow. The lender must first send a default notice – a formal letter giving you at least 14 days to put things right – and on HP and PCP, once you've paid a third or more of the total amount payable, it needs a court order to take the car back unless you agree.

If you're struggling, MoneyHelper offers free debt advice. See what happens if you default on car finance and giving the car back.

How can you compare car finance offers?

You can compare car finance offers fairly by checking your credit report first, then setting quotes side by side on the same deposit and term.

  1. Check your credit report. Ask the credit reference agency to correct any mistakes. Building a better history takes time, so don't expect an instant score change.
  2. Set a budget that includes running costs. A payment can look manageable until you add insurance, fuel, tax and servicing.
  3. Check the type of credit search. An eligibility check usually uses a soft search, which other lenders can't see. A full application usually involves a hard search, which stays on your file. Several hard searches close together can make later borrowing harder.
  4. Compare the whole agreement. Use the same deposit and term for each quote, then set the APR, fees and total amount payable side by side with the monthly payment. With PCP, include the optional final payment if you plan to keep the car.

Once you have a personal quote, check its total amount payable against your budget before you make a full application.


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