Deals & rates
Cheapest Car Finance: How to Get the Best Rate
How to get the lowest true cost — comparing APR not monthlies, boosting your credit and timing it right.
The cheapest car finance is the deal with the lowest APR over the shortest term you can afford — not the one with the lowest monthly payment. A low monthly usually means a longer term, and a longer term means more interest.
Three levers cut the true cost: a lower APR, a bigger deposit, and a shorter term. Get all three working and you pay hundreds, sometimes thousands, less. Here's how to compare deals so the cheapest one actually wins, in plain English and pounds.
How to get cheaper car finance
You get cheaper car finance by lowering the APR, putting down a bigger deposit, and choosing the shortest term your budget allows. Each one cuts the total interest.
On a £20,000 car at 9.9% APR, dropping from 48 to 36 months cuts the interest from about £3,700 to roughly £2,750 — a £950 saving for paying it off a year sooner, with the same deposit and rate. Test your own figures on the APR & true-cost calculator.
These levers stack. A stronger credit file that drops your rate from 9.9% to 7.9%, a deposit bumped from £2,000 to £4,000, and a term cut from 48 to 36 months can together turn a £23,700 deal into one closer to £21,500. None of them is exotic — they're the standard inputs to any quote, moved in the direction that saves you money.
- Lower the APR: a stronger credit file and a personal loan instead of dealer finance both tend to bring the rate down.
- Increase the deposit: borrowing less means less interest — every £1,000 down saves interest across the whole term.
- Shorten the term: 36 months costs far less in interest than 60, even at the same APR.
- Shop the product: HP or a personal loan is usually cheaper overall than PCP for the same car, because there's no balloon inflating the interest.
Compare APR, not monthly payments
Always compare car finance deals on APR and total cost, never on the monthly payment alone. A lower monthly almost always hides a longer term and more interest.
The 60-month deal has the lowest monthly but costs nearly £2,000 more than the 36-month one — £24,680 against £22,750. A 'cheap' monthly is the most expensive thing on this table. The APR calculator turns any monthly quote back into a total, so you can see past the headline figure a dealer leads with.
The reason is simple arithmetic. Interest is charged on the balance every month you owe money. Stretch the term and you add more months of interest charges, even though each individual payment is smaller. The cheapest monthly and the cheapest total point in opposite directions.
| Term | Monthly | Total interest | Total payable |
|---|---|---|---|
| 36 months | ≈ £555 | ≈ £2,750 | ≈ £22,750 |
| 48 months | ≈ £452 | ≈ £3,700 | ≈ £23,700 |
| 60 months | ≈ £390 | ≈ £4,680 | ≈ £24,680 |
What affects your car finance rate
Your APR is set mainly by your credit file, the deposit, the term, and the type of finance. Improve any of these and the rate usually falls.
Lenders price the rate to the risk they're taking. A clean credit file, a stable income, and a deposit that means you have skin in the game all signal lower risk and earn a lower APR. The flip side is that a thin or marked file pushes the rate up — and if yours is in that shape, car finance with bad credit sets out the realistic options.
- Credit score: a stronger file unlocks lower rates — see what credit score you need.
- Deposit size: more money down lowers the lender's risk and often the rate.
- Finance type: a personal loan can undercut dealer PCP or HP for buyers with good credit.
- Car age: used and older cars sometimes carry higher rates than new, because the lender sees more risk in the collateral.
- Loan-to-value: borrowing a smaller share of the car's value (a bigger deposit relative to the price) tends to pull the rate down.
The best time to get a cheaper deal
The best time to find a cheaper deal is at the end of a sales quarter or during a plate change, in March and September. Dealers chasing targets discount harder.
End-of-quarter (March, June, September, December) and plate-change months are when offers and 0% deals appear, because dealers and manufacturers are working to hit volume targets before the period closes. A car sitting on the forecourt at the end of March is a car the dealer wants gone — and that shows up as a deposit contribution, a discounted rate, or a cash discount.
A strong credit file at the right moment is the cheapest combination, because the best advertised rates are reserved for the lowest-risk buyers. Read the full timing playbook in low rate car finance, and remember that the offers move quickly — a rate available in late March may be gone by mid-April.
Worked example: the three levers, in pounds
A £20,000 car at 9.9% over 48 months costs about £23,700 total; the same car at 7.9% over 36 months with a bigger deposit costs about £21,300 — a £2,400 saving.
The monthly rises from £452 to about £540 in this example, because the term is shorter. That's the trade-off at the heart of cheap finance: a higher monthly almost always buys a lower total. Run your own version on the APR & true-cost calculator and the main car finance calculator.
Worked example
Quick wins: 5 ways to cut your car finance cost this week
Before you sign anything, these five moves can each shave pounds off your monthly or hundreds off your total — and most take an hour or less.
None of these is exotic, and together they can shift your total cost by £1,000 or more on a typical £20,000 car. The leverage comes from doing all of them rather than relying on one — a stronger credit file plus a bigger deposit plus a competing quote multiplies the savings in a way no single move can match.
- Check your credit file for free at a credit reference agency (Experian, Equifax, TransUnion) and fix any errors. A cleaned-up file can move you up an APR band.
- Soft-search a personal loan at your bank or a comparison site to get a benchmark APR — it's your fallback and your negotiating chip at the dealer.
- Save an extra £500–£1,000 toward the deposit. Every £1,000 down cuts the interest across the whole term, and can unlock a lower rate.
- Get quotes from at least three sources: a bank loan, a broker, and the dealer. Three quotes on the same scale expose the cheapest one.
- Time your purchase for a plate-change (March or September) or quarter-end, when dealers chase targets and discount harder.
The cheapest finance isn't always the best finance
The lowest total amount payable is the right primary metric, but ownership, flexibility and your own monthly budget matter too — the cheapest deal on paper can be the wrong deal for your life.
A 36-month HP deal at 7.9% with a £4,000 deposit is objectively the cheapest route to owning a £20,000 car. But if the £540 monthly would stretch your budget to breaking, or if you value the flexibility to hand the car back in two years, a PCP at a higher total may suit you better. The 'cheapest' label only means anything once you've factored in what you actually need from the agreement.
This is why our calculators always show both the monthly and the total, and why our comparison pages set out who each option suits. The cheapest deal for someone who keeps cars for a decade looks different from the cheapest deal for someone who changes every three years — and both are legitimate. Work out your own numbers, decide what matters to you (ownership, flexibility, monthly, total), and let the two together pick the route. See best car finance deals for the framework that ties it all together.
Work out the true cost of any rate
Before you commit, run every deal through the same true-cost check so the genuinely cheapest one wins. Compare totals, not monthlies.
Use the APR & true-cost calculator to see the total interest on any rate, then compare deals side by side on the main car finance calculator. If a 0% offer is in the mix, check it against a discount on 0% car finance deals. The cheapest car finance is the deal with the lowest total amount payable for a car and term that genuinely suit your budget — nothing else.
In plain English
Frequently asked
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