Buying your first car is exciting — and expensive in ways that go well beyond the asking price. In the UK, insurance, road tax, the MOT and running costs can add hundreds of pounds a year, and they vary wildly between models. This guide walks through every cost a first-time buyer needs to understand, in plain English.
1. Car insurance: the biggest cost for new drivers
For most first-time buyers, insurance is the largest single cost — often bigger than the car itself in the first year. Every car sold in the UK sits in an insurance group from 1 to 50, and group 1 cars are the cheapest to insure. As a rule, small cars with small engines and modest repair costs sit in the lowest groups.
Practical ways to keep premiums down:
- Choose a low insurance-group car. Before falling in love with a model, compare quotes across a shortlist — the difference between group 2 and group 20 can be thousands of pounds.
- Consider a telematics ("black box") policy. A small device or app tracks your driving; smooth, cautious driving is rewarded with lower premiums at renewal.
- Add a named driver with experience (such as a parent) — this can cut costs, but never name someone as the main driver if you will be the one driving most. That is called "fronting" and it is insurance fraud.
2. Road tax (VED): what you actually pay
Vehicle Excise Duty — still called "road tax" or "car tax" by everyone — is based on the car's CO2 emissions and its price. For brand-new cars, the first year's rate is higher and varies by emissions band; from the second year, most cars pay a flat standard rate. Because rates change from time to time, always check the current bands on GOV.UK before you budget.
Efficient petrol superminis and hybrids generally cost less to tax than large, thirsty models. Electric cars are taxed too, so check the current position on GOV.UK for the year you buy.
3. The MOT: when it starts and what it covers
A brand-new car does not need an MOT until it is three years old; after that, it needs one every year. The test checks safety-critical items — brakes, lights, tyres, emissions, steering and structure — not cosmetic condition. A car with no valid MOT cannot legally be driven on the road (except to a pre-booked test).
When buying used, check the car's MOT history on GOV.UK before viewing. Repeated advisories on brakes, suspension or corrosion are a warning sign.
4. Running costs: fuel, servicing and tyres
Beyond insurance and tax, budget for the costs that never stop:
- Fuel. Small petrol superminis are cheap to fill and economical. High-mileage drivers can save with a hybrid — but work out your annual miles first.
- Servicing. Budget for an annual service; cars with cheap, widely available parts are far cheaper to keep over five years.
- Tyres. Popular small cars use common, inexpensive tyre sizes; big alloy wheels mean pricier replacements.
5. Cheap-to-run first cars to shortlist
You do not need to spend much to get a safe, reliable first car. These superminis are long-standing favourites for new drivers — cheap to insure, cheap to tax and cheap to keep:
- The Ford Fiesta — nimble, fun and plentiful, with low-group insurance on base models.
- The Vauxhall Corsa — comfortable, easy to drive and hugely popular with learners.
- The Toyota Yaris — a hybrid with excellent fuel economy and a reliability record.
6. Run the numbers before you buy
The single best piece of advice: total up five years of ownership — purchase price, insurance, tax, fuel and servicing — before you sign anything. Our car cost tools can help you compare the true cost of two models side by side, so the "cheaper" car does not turn out to be the expensive one.
Frequently asked questions
How old must a car be before it needs an MOT?
Three years — then annually. Check any used car's MOT history free on GOV.UK.
What insurance group is cheapest for a first car?
Group 1 in the 1–50 system. Small superminis sit in the lowest groups — but always get real quotes, as your age and postcode matter as much as the car.
Do electric cars pay road tax in the UK?
Yes — EVs are subject to Vehicle Excise Duty like other cars; check the current GOV.UK bands for the year you buy.
Is a black box policy worth it for new drivers?
Usually yes — telematics rewards careful driving with lower premiums, one of the few reliable ways for under-25s to cut costs.
What is the cheapest type of car to run overall?
A small petrol or hybrid supermini: low insurance group, low road tax, cheap tyres and parts, and strong fuel economy.