Car tools and calculators
Practical tools to help you understand what a car really costs and how leasing works. Anything you type, like a fuel price or a monthly rental, is your own assumption, and we label it clearly. We do not sell cars or quote deals, so nothing here is an offer.
Costs and tax
Work out tax and running costs before you commit, using official rates and real economy figures.
Company car tax (BiK) calculator
Benefit in kind tax on any company car from 2025/26 to 2029/30, with a salary sacrifice estimate.
Open the toolFuel and charging cost calculator
Compare yearly fuel or charging cost for up to three cars using official economy figures.
Open the toolBusiness mileage calculator
HMRC advisory fuel rates for company cars and approved mileage rates for your own car, compared with your fuel cost.
Open the toolFuel prices near me
Live petrol and diesel prices at nearby UK stations, with the lowest price and directions.
Open the toolCar tax (VED) calculator
First year and standard road tax by CO2, plus the expensive car supplement.
Open the toolTrue monthly cost of a lease
Spread the initial rental and add fuel and insurance for an all-in monthly cost and cost per mile.
Open the toolLeasing decisions
Compare your options and avoid surprises at the end of an agreement.
Lease deal checker
Enter up to three lease quotes you have been offered and compare total cost, monthly cost and excess mileage side by side.
Open the toolLease vs PCP vs HP vs buying
Total cost and what you own at the end, side by side, using your own figures.
Open the toolExcess mileage calculator
Estimate an excess mileage charge and pick a sensible annual mileage.
Open the toolShort-term lease vs subscription
Compare a short-term lease, a subscription and a long-term rental for the months you need a car.
Open the toolFair wear and tear checklist
A walk-around checklist based on the BVRLA standard before you hand a car back.
Open the toolHow we build these
Every tool uses official figures and shows which tax year it applies. Anything you enter is labelled as your assumption. We do not show deals or prices. See our data sources and licences, and browse the car data league tables.