UK Car Finance Tool

Car loan repayment calculator

Work out your monthly repayment, total interest, and true cost of ownership for HP or personal car finance.

The average UK car loan is £10,000+ — know what it really costs before you sign.

Inputs

Car price

£

Deposit

£

Loan term

Annual interest rate

%


Additional monthly costs

Car insurance

£/month

£

Road tax

£/month

£

Parking

£/month

£

Results

Share your result

💳Monthly repayment

£422.24

Principal & interest only

📈Total interest

£3,267

Over 48 months

💷Total repaid

£20,267

Loan £17,000 + interest

Loan balance over time

Remaining loan balance


Guide

Car Finance Questions

What is a good interest rate for a car loan in the UK?

In 2025, typical car loan APRs range from 6% to 15%. A rate below 8% is generally competitive. Always compare APR rather than flat rates — flat rates significantly understate the real cost of borrowing.

What is the difference between PCP and HP car finance?

Hire Purchase (HP) means you own the car once all payments are made — no balloon payment and no mileage limits. PCP has lower monthly payments but a large optional final payment at the end. This calculator models HP or a personal loan.

Should I put down a bigger deposit?

Yes — a larger deposit reduces your loan amount, your monthly repayment, and the total interest paid. An extra £1,000 upfront on a typical 4-year loan can save hundreds in interest over the term.

Is dealer finance or a bank loan better?

Dealer finance is often more expensive, but dealers occasionally offer 0% promotional deals on new cars. Always compare the total amount repayable, not just the monthly figure. A lower monthly payment can hide a longer term and higher total cost.

What other costs should I factor in?

Car insurance, road tax, fuel, servicing, MOT, parking, and tyres all add up. Use the "Additional monthly costs" section above to add insurance, road tax, and parking to see your true monthly commitment.


How We Calculate

1. Monthly repayment — standard annuity formula:
  • Monthly rate r = annual APR ÷ 12
  • Repayment = loan × r × (1 + r)n ÷ ((1 + r)n − 1)
2. Amortisation schedule — each month:
  • Interest = remaining balance × monthly rate
  • Principal = monthly repayment − interest
  • New balance = old balance − principal
The chart shows how the split between interest and principal shifts over the loan term.
3. Total cost of ownership — total loan repayments + running costs (insurance + road tax + parking) over the full term. This gives the true cost beyond just the car price.

All figures are nominal. This is an illustrative model, not financial advice.

Back to calculator

Explore more tools

Other calculators you might find useful