By vehicle · Mercedes-Benz

Mercedes B-Class Insurance Cost UK (2026)

A Mercedes-Benz B-Class costs around £959 a year to insure comprehensively in 2026, sitting in insurance groups 15–31 — only a little above the UK average. For a premium-badged car that's a genuinely sensible number, because the B-Class is a practical compact MPV rather than anything quick, and its groups reflect that.

See cost by age All vehicles

15–31

Insurance group (of 50)

~£959/yr

Typical comprehensive premium

£330–£16.4k

Real quote range by driver

Direct answer

What does it cost to insure a Mercedes B-Class?

The typical fully comprehensive premium for a Mercedes B-Class in the UK is about £959 a year, or roughly £85 a month if you spread it, according to Finder. That's a shade above the £719 average quoted premium from the Confused.com Price Index for Q2 2026, above the £566 average premium actually paid reported by the ABI over the same window, and a fair bit over the roughly £600 all-cars figure on our UK cost index. The gap is modest, though — and most of it is the Mercedes badge, not the car being fast.

What the £959 headline hides is how wide the real spread is. Finder logged genuine B-Class quotes running from £330 to £16,360, so your own details decide far more than the model does. Four things move the number most:

Insurance group. Parkers rates the current (2019-on) B-Class at groups 15 to 31; across all generations Finder's data spans a wider band, from the older economical diesels near group 9 up into the 40s for the highest-output and most loaded trims. The mainstream B 180 and B 200 petrols and diesels sit in the teens to twenties; the plug-in hybrid B 250e and AMG Line trims sit higher.
Parts and repair cost. This is the real reason a B-Class costs a touch more than a mechanically similar mainstream MPV. Mercedes parts, bodywork and the driver-assist tech on higher trims are dearer to put right, and insurers price that in even though the car isn't quick.
Engine and drivetrain. The petrols and diesels are the sensible, cheaper-to-cover choices; the B 250e plug-in hybrid carries a higher value and battery-repair complexity, which nudges its group and premium up.
Who's driving, and where. Age, postcode, annual mileage and no-claims history routinely matter more than the badge — which is exactly why one driver is quoted under £350 and another over £16,000 for the identical car.

The numbers

Mercedes B-Class insurance cost by driver age

These indicative figures are a Car Insurance Expert composite estimate: we take the Finder B-Class average and scale it across the age bands using the published age relativities from the Confused.com and ABI data. The B-Class skews toward older, settled owners, which is part of why the average is as sensible as it is — but a driver in their twenties still pays roughly double a driver in their forties.

Mercedes B-Class typical comprehensive premium by driver age — UK 2026

Under-25s pay the most by a distance; premiums settle from the mid-30s, close to the UK average.

Car Insurance Expert composite estimate, informed by the £958.59 Finder UK B-Class average and Confused.com / ABI Q2 2026 age relativities (£719 quoted, £566 paid all-ages). Not insurer-supplied quotes.

Driver age band	Indicative annual premium	Notes
17–24 (young / new)	£1,400–£2,100	Highest band by far — a B-Class isn't a natural first car, and a higher-group B 250e or AMG Line for a young driver can run well beyond £2,000
25–34	£820–£1,150	Around £980 on our composite; the premium drops quickly once a couple of no-claims years are on record
35–64	£640–£820	The cheapest years — roughly £730 for a settled driver with clean history, barely above the national average
65+	£700–£950	Creeps up gently with age; the B-Class is a popular choice with this group for its high seating and easy access

Indicative figures — a Car Insurance Expert composite estimate, not insurer-supplied quotes. Built from the £958.59 B-Class average published by Finder (with a £329.67–£16,359.52 real quote range), scaled across age bands using Confused.com and ABI Q2 2026 age relativities (£719 quoted, £566 paid all-ages). Your own quote will vary by postcode, engine, trim, mileage and claims history.

By engine & trim

Which Mercedes B-Class is cheapest to insure?

Because the B-Class covers a wide group span, engine and trim choice is the biggest lever you control before you've even had a quote. The pattern is consistent across the current W247 (2019-on) and the earlier W246:

B 180 / B 200 petrol, Sport or SE trim — the friendliest end of the range. These mainstream petrols in lower trim are the ones to aim for if insurance cost is front of mind.
B 180d / B 200d diesel — broadly similar groups to the petrols, sometimes a notch higher on value. Worth it only if you cover the miles to use the fuel economy.
B 250e plug-in hybrid and AMG Line trims — the top of the range for insurance. The plug-in hybrid's higher value and battery-repair complexity, and AMG Line's bigger wheels and body kit, push these into the higher groups.

We see this a lot with premium compact cars: people stretch to an AMG Line B 250e, then find the insurance and the tyres cost noticeably more than the B 180 Sport they first drove. If your mileage is modest, the plain petrol in SE or Sport trim is usually the smarter total-cost buy. Check the exact group for your registration against our insurance groups guide before you commit — trim alone can move a B-Class several groups.

Save money

How to cut the cost of Mercedes B-Class insurance

None of these bend the rules; they're the levers that actually shift a premium-badge MPV's premium.

Buy the lower-group engine and trim. A B 180 petrol in SE or Sport spec is materially cheaper to insure than a B 250e or an AMG Line car. If you're choosing between two B-Classes, the group number is worth real money every year.
Build and protect your no-claims discount. On a group-15-plus car the NCD matters more than on a city car; several protected years can knock hundreds off.
Raise your voluntary excess to a figure you could genuinely find after a claim. It lowers the premium, but only take the saving if you could actually pay the excess.
Pay annually rather than monthly. Monthly instalments carry interest — often an APR of 20–30% — so paying up front typically saves £60–£90 a year on a car at this price.
Keep mileage realistic and park it securely. An honest lower annual mileage and a garage or driveway both pull the price down, and the B-Class's older-owner profile already helps here.
Shop the whole market at renewal. Loyalty almost never pays. With genuine B-Class quotes spanning £330 to £16,360, the biggest saving most owners leave on the table is simply not comparing.

FAQs

Mercedes B-Class insurance: your questions answered

What insurance group is the Mercedes B-Class in?

Parkers rates the current (2019-on) B-Class at insurance groups 15 to 31 out of 50, while Finder's data across all generations runs wider — from around group 9 for the older economical diesels up into the 40s for the highest trims. The mainstream B 180 and B 200 petrols and diesels sit in the teens to twenties; the B 250e plug-in hybrid and AMG Line cars sit higher. Check the group for your exact engine and trim rather than the badge. See our insurance groups guide for how the scale works.

How much does it cost to insure a Mercedes B-Class per year?

About £959 a year on average for fully comprehensive cover, or roughly £85 a month, per Finder UK. That's only a little above the £719 UK quoted average, which is reasonable for a premium badge. Real quotes stretch from under £350 to over £16,000 depending on your age, postcode, engine and no-claims history, so the average is only a starting point.

Why is a Mercedes B-Class more expensive to insure than a mainstream MPV?

Mostly parts and repair cost. The B-Class isn't fast, so it's not the performance that pushes the premium — it's that Mercedes panels, trim and the driver-assist tech on higher-spec cars cost more to put right after a knock. On like-for-like driver details a B-Class typically costs a little more than an equivalent Volkswagen or Vauxhall MPV, but the gap is smaller than most people expect given the badge.

Which B-Class engine and trim is cheapest to insure?

The B 180 or B 200 petrol in SE or Sport trim, which sit at the lower end of the group range. Avoid the B 250e plug-in hybrid and the AMG Line trims if premium is your priority — the hybrid's higher value and battery-repair cost and AMG Line's bigger wheels and body kit push them into the higher groups. For most owners the plain petrol in modest trim is the smarter total-cost choice.

Is the B-Class expensive to insure for young drivers?

It's on the dear side for a first car, though not extreme. On a composite basis a driver in the 17–24 band pays roughly £1,400–£2,100, and a higher-group B 250e or AMG Line car can push a young driver well past £2,000. A new driver set on a B-Class should stick to a B 180 petrol in SE trim, add a black box and keep mileage modest; even then, a smaller car would be cheaper to start out on.

Is the B 250e plug-in hybrid more expensive to insure than the petrol?

Generally yes. The B 250e carries a higher list value than the B 180/B 200 petrols and its battery and hybrid system add repair complexity, so it sits in higher insurance groups and costs more to cover. The running-cost savings from plug-in driving can offset that if you do a lot of short electric trips and can charge at home, but on insurance alone the petrol is the cheaper car.

Do modifications increase B-Class insurance?

Yes. Performance, cosmetic or wheel modifications usually raise the premium and must always be declared — failing to disclose one can void a claim or even the whole policy. A standard, unmodified B-Class is always the cheapest to insure. If you've bought a car with existing mods, or you're tempted by aftermarket AMG-look wheels, tell the insurer exactly what's fitted before you take out cover.

Will a black box policy make a B-Class cheaper?

For younger and newer drivers, usually yes. A telematics policy prices you on how you actually drive rather than age alone, which can meaningfully cut a 17–24 premium even on a premium-badge car like the B-Class. For settled 35–64 drivers with several years of no-claims, the saving is smaller and often not worth the curfews and mileage limits that come with a box.

Our sources

Sources & methodology

Finder UK — Mercedes B-Class insurance group & average cost (the £958.59 average premium and the £329.67–£16,359.52 real quote range; data updated April 2026)
Parkers — current Mercedes B-Class insurance group data (groups 15–31)
Confused.com Price Index and the Association of British Insurers (ABI) — Q2 2026 UK average premiums (£719 quoted, £566 paid) and the age relativities behind our composite
Thatcham Research / ABI Group Rating Panel — the 1–50 insurance group scale used throughout

Figures are indicative and for guidance only; the age-band premiums are a Car Insurance Expert composite estimate, not insurer-supplied quotes. Your own quote depends on age, postcode, engine, trim, mileage, claims history and cover level. Compare the whole market for the most accurate price. See also all vehicles, our UK car insurance cost index, the sibling Mercedes A-Class insurance cost page and insurance groups explained.

Reviewed by the Car Insurance Expert editorial team. Our motoring editor checks each model page against current Finder and Parkers data and the ABI/Confused.com Q2 2026 averages. Questions: use our contact form.

Last updated: 12 September 2026

Explore more

More By Vehicle pages

← Back to By Vehicle