The single biggest factor in a first car's running cost is its insurance group, not its purchase price. Choosing correctly here can be the difference between a genuinely affordable first year of driving and one that stretches a new driver's budget to breaking point.
Quick picks:
- Cheapest to insure overall: Hyundai i10 or Citroen C1, both reaching group 1 in base trim.
- Best all-rounder: Kia Picanto, group 4 with a genuinely useful seven-year warranty.
- Best for slightly more space: Skoda Fabia, often overlooked and better equipped than rivals at the same price.
- Best for a bit more maturity and motorway comfort: Volkswagen Polo.
Why Does Insurance Group Matter So Much for a First Car?
Every UK car is rated on a scale, historically 1 to 50, based on repair costs, performance, safety and how attractive it is to thieves. The lower the group, the cheaper it typically is to insure. The gap between the lowest and highest groups can genuinely mean a difference of £1,500 to £2,000 a year for a young driver. Since insurance is usually the single largest ongoing cost a new driver faces, well ahead of fuel or servicing, choosing a low group car matters more than almost any other decision when buying a first car. For the full detail on how premiums are calculated and how to bring your own quote down further, see our guide on getting cheap car insurance.
Hyundai i10
The i10 is the benchmark most other cars on this list get compared against. The base 1.0-litre petrol version sits in group 1 or 2 depending on the exact trim and gearbox, about as cheap as insurance gets, without feeling cheap inside. The cabin is genuinely well-built for the price too, coming with a five-year, unlimited-mileage warranty that sometimes still has time left on a used example. It's small. Three people fit comfortably in the back though, more than several rivals of a similar size manage.
Citroen C1
Sharing its platform with the Peugeot 108, the C1's 1.0-litre petrol version reaches group 1, tying it for the cheapest mainstream option available. It's a proper city car first and foremost, with a short wheelbase and narrow body that make it easy to park but less settled on a longer motorway run. For a first driver whose journeys are mostly short trips around town, that trade-off is usually a fair one given how much it saves on insurance.
Kia Picanto
The Picanto sits in group 4 in base trim, whichever gearbox you choose, coming with Kia's seven-year warranty too, genuinely valuable if you're buying one still within that window. Equipment levels beat what the price suggests, with a slightly more grown-up feel than the very cheapest city cars on this list, achieved without giving up much on the insurance side.
Volkswagen Up
The Up's interior quality punches well above its price point. The entry-level 1.0-litre version keeps insurance costs about as low as the segment allows too. It's genuinely pleasant to drive for something this small, with decent fuel economy and enough comfort that it doesn't feel like a compromise purely chosen to save money.
Skoda Fabia
Built on the same underpinnings as the Polo but consistently selling for less, the Fabia's 1.0 MPI version sits around group 4, rising to group 7 to 10 for the slightly punchier 1.0 TSI engine. More boot space and rear legroom than most rivals its size come as standard. The Fabia simply isn't on enough buyers' radar either, keeping used prices genuinely reasonable for what you get.
Volkswagen Polo
The most grown-up car on this list, the Polo's 1.0-litre entry trim reaches group 2 to 3, still very affordable to insure despite feeling like a noticeably larger, more refined car than the true city cars above. Motorway refinement and interior quality are both a step up, worth the small premium in group rating if a first car also needs to handle longer journeys occasionally.
Fiat 500
The 500's retro styling has aged well since 2007. Current versions use a 1.0-litre mild hybrid engine too, keeping insurance groups low while adding a genuine efficiency benefit. Space is tight in the back, realistically fine only for smaller passengers. For a first car prioritising style and low running costs together though, it remains a strong choice.
Vauxhall Corsa
A consistent favourite with new drivers for decades, the Corsa's compact size and low running costs keep it firmly in the affordable insurance bracket in entry trim. It's an easy car to learn on and to live with day to day, helped by widely available parts and servicing given how common it is on UK roads.
Which Cars Should First-Time Buyers Avoid?
Some cars look genuinely affordable on a monthly finance figure but carry a brutal insurance group once you dig into the actual rating. Older BMW 1 Series models from the 118i upward, for example, commonly sit in groups 20 to 36, a figure that can easily double or triple what a new driver pays compared to any car on the list above. The same trap applies to most hot hatches and anything with a turbocharged engine over 1.4 litres. Performance and desirability both push a car's group up sharply regardless of age or purchase price. Always check the specific insurance group for the exact trim and engine you're considering before assuming a car is affordable, rather than judging purely by the asking price.
What Else Should You Check Before Buying Your First Car?
Choosing the right car is only part of buying well. Once you've picked a model from this list, a handful of other checks matter just as much before you actually hand over any money. Our complete guide to buying a used car covers the full process from start to finish, worth reading in full if this is genuinely your first purchase.
Beyond that, a few specific steps make the biggest difference. Asking the seller the right questions reveals more than a listing ever will, covered fully in our guide on questions to ask when buying a used car. Checking the paperwork properly, including the V5C and service history, protects you legally and financially, detailed in our documents guide. A proper test drive remains essential regardless of how good a car looks on paper, with the full checklist in our test drive guide.
If you're financing rather than paying cash, understanding the difference between HP, PCP and a personal loan matters just as much as choosing the right car, covered in full in our used car finance guide.
Frequently Asked Questions
What's the cheapest used car to insure for a new driver? The Hyundai i10 and Citroen C1 both commonly reach group 1 in their most basic petrol trim, making them the cheapest mainstream options available.
Does the gearbox affect insurance group? Sometimes. A few cars, including the Kia Picanto, keep the same group across manual and automatic versions, though this varies by model. Worth checking both if you're deciding between them.
Is it better to buy new or used as a first-time driver? Used almost always makes more financial sense for a first car, avoiding the steepest depreciation and typically costing less to insure. Our guide on the benefits of buying a used car covers this in full.
Should I add an experienced driver to my policy to reduce costs? Yes, provided they genuinely and regularly use the car too. Adding a parent or older family member as a named driver can meaningfully lower the premium on a first policy.
Do small engines always mean cheaper insurance? Generally yes, though other factors matter too, including the car's safety rating, repair cost and how attractive it is to thieves, which is why two similarly sized cars can still land in noticeably different groups.
Browse our full range of used cars at Car Planet, with clear specifications on every vehicle so you can check the exact insurance group before you commit to anything.
