15 Best First Cars UK 2026: Low Insurance Groups and Running Costs

Buying your first car is exciting, but the costs can be brutal. Insurance alone can exceed £2,000 per year for a 17 to 19 year old, and that is before you have paid for fuel, tax, MOT, and repairs. The trick is finding a car that keeps all of these costs as low as possible. We weighed typical insurance groups, MOT pass rates from millions of tests, and running costs to pick the best first cars you can buy in 2026.

Four things matter: insurance group, fuel economy, reliability, and purchase price. Insurance is the biggest expense for young drivers, so the car's insurance group is the most important factor. Groups range from 1 (cheapest) to 50 (most expensive), and a first car should ideally be in groups 1 to 10.

Beyond insurance, you want a car with a small, efficient engine (1.0 to 1.25 litres for petrol), a high MOT pass rate (which predicts low repair costs), and a purchase price that does not wipe out your savings. You can compare models on our cheapest cars to run page.

All sit in insurance groups 1 to 8 and offer low running costs. The C1, 108, and Aygo share the same Toyota-sourced engine, which is extremely reliable. The Fiat 500 is the style choice, though its reliability is slightly behind the Japanese competition.

For a 17-year-old driver, insurance on a group 1 car might cost £1,200 to £1,800 per year. Move to a group 10 car, and you could be looking at £2,500 or more. By group 20, it may be unaffordable at £3,500 and above.

Tips to reduce your first-car insurance:

1. Choose groups 1 to 7 - Lower groups mean cheaper premiums for young drivers.
2. Add a named driver - A parent who genuinely drives the car. "Fronting" (listing a parent as main driver to cut premiums) is insurance fraud.
3. Consider a telematics (black box) policy - Monitors your driving and can reduce premiums by 20 to 30%.
4. Park on a driveway or in a garage - Not on the street. Off-road parking reduces premiums.
5. Pay annually if you can - Monthly payments add 10 to 20% in interest charges.

All of the cars on this list have small engines, which keeps fuel costs manageable. A 1.0-litre petrol engine averaging 48 mpg will cost roughly £1,230 per year at 7,400 miles, at early October 2026 pump prices. Most new drivers cover fewer miles than the UK average, so your fuel bill could be closer to £650 to £1,000.

Avoid diesel for a first car. The purchase price is usually higher, insurance is more expensive, and the fuel savings are negligible at low mileage. Stick to petrol, ideally 1.0 to 1.25 litres.

An unexpected repair bill of £500 is annoying for an experienced driver. For a new driver on a tight budget, it can be devastating. This is why reliability should be a top priority.

Check any car's MOT history before you buy. Our free car checker will show you every MOT result, advisory, and failure the car has ever had. Look for patterns: recurring advisories for brakes, suspension, or tyres are normal wear. Recurring warnings about corrosion, engine management lights, or emissions suggest deeper problems.

You can also check model-level reliability on our reliability rankings page to see how different cars compare.

• Turbocharged engines over 1.5 litres - Insurance will be prohibitive for young drivers.
• Sports cars, hot hatchbacks, and performance variants - Even a "tame" Golf GTI will cost a 17-year-old thousands in insurance.
• Modified cars - Modifications almost always increase insurance premiums, and some insurers refuse to cover modified vehicles at all.
• Diesel cars (for low-mileage new drivers) - Higher purchase price, more complex engines, and no fuel savings at low mileage.
• Cars over 15 years old - While cheap to buy, very old cars can become unreliable and expensive to keep on the road.