Guide · By Vehicle · BMW 3 Series

BMW 3 Series insurance cost in the UK (2026)

Q: What insurance group is a BMW 3 Series?

The current (2019-on) BMW 3 Series saloon spans insurance groups 24 to 42 out of 50. Entry 318i and 318d SE models sit in groups 24–27, the volume 320i and 320d M Sport in groups 28–31, the 330i and 330e around 32–34, and the 330d xDrive in 38–41. The M340i and M340d reach 39–42, while the full M3 sits in groups 43–50. Cars registered after 1 August 2024 use the newer Vehicle Risk Rating system instead of a single group number.

Q: Is a 320d cheaper to insure than a 320i?

Usually the petrol 320i is marginally cheaper to insure than the diesel 320d, because the diesel sits one to three insurance groups higher (28–31 vs 28–30) thanks to its higher list price, torque and repair cost. The difference is typically £50–£150 a year on insurance. Diesel still wins on fuel for high-mileage drivers, so the total cost of ownership often favours the 320d despite the slightly higher premium — run the numbers on your annual mileage.

Q: How much does it cost to insure an M340i or M3?

An M340i or M340d xDrive (insurance groups 39–42) typically costs £1,900–£2,600 a year for a 35–50-year-old with a clean licence — £700–£1,200 more than a 320d. The full M3 / M3 Competition (groups 43–50) usually runs £2,800–£4,500+, and under-30s or city drivers can pay far more. For M cars it is often worth using a specialist performance broker such as Adrian Flux or Sky Insurance rather than a mainstream comparison panel, which tends to load heavily.

Q: Is the BMW 3 Series a theft target?

Yes. The 3 Series is regularly among the UK's five most-stolen cars, mainly because of keyless relay attacks — now more than 70% of all UK vehicle thefts. Thieves relay the fob's signal from inside your home to the car and drive off in under a minute. Mitigate it by keeping keys in a Faraday pouch, fitting a Thatcham-approved tracker or aftermarket immobiliser, using a steering lock, and parking in a garage or on a monitored driveway. These steps can also reduce your premium's theft loading.

Q: Does a 330e plug-in hybrid cost more to insure?

The 330e plug-in hybrid sits in similar insurance groups to the petrol 330i (around 32–34) and does not deliver a meaningful insurance saving. While it is cheaper to run and taxed favourably as a company car, the high-voltage battery and hybrid drivetrain are expensive to repair or replace after a collision, which offsets any efficiency benefit on the insurance side. Expect roughly £1,500–£1,750 a year for a typical driver — slightly above the volume 320d.

Q: Does the new Vehicle Risk Rating system affect newer 3 Series?

Yes. BMW 3 Series cars registered after 1 August 2024 are rated under the ABI/Thatcham Vehicle Risk Rating (VRR) system rather than the single 1–50 insurance group. VRR scores each car across five separate 1–99 ratings — performance, safety, security, repair cost and repair time — so insurers price more granularly. In practice it means two near-identical 3 Series can be priced differently depending on their security and driver-assistance specification, and well-specced security can now actively lower your premium.

The average BMW 3 Series costs £1,372 a year to insure comprehensively in the UK in 2026 — roughly 2.4× the £560 national average — because the range sits in insurance groups 24–42, it is a relay-theft target, and BMW parts and labour push the average accidental-damage claim well above £3,000. Below: premiums by trim and driver age, the cheapest insurers, theft risk, and how to cut your quote.

Premiums by trim → Other vehicles

Direct Answer

How much does it cost to insure a BMW 3 Series?

A typical UK driver pays around £1,372 a year to insure a BMW 3 Series on comprehensive cover in early 2026 (about £119 a month if paid monthly). That is roughly 2.4 times the £560 UK market average reported by the ABI for Q1 2026. The figure is an average across all trims, ages and postcodes — a 45-year-old in a 320i SE in a low-crime postcode might pay £950, while a 28-year-old in an M340i in a city could pay £2,500+.

Three structural reasons explain the premium. First, insurance group. Mainstream 3 Series saloons sit in groups 24–34 (out of 50), and the M Performance and M3 cars reach groups 39–50 — every step up the group ladder raises the expected claims cost. Second, repair economics. The 3 Series uses aluminium body panels, adaptive LED lighting, complex driver-assistance sensors and a manufacturer-specified repair network; the ABI's average accidental-damage claim hit £3,699 in Q1 2026, up 8% on the prior quarter, and German-marque parts inflate that further. Third, theft. The 3 Series is among the UK's most-stolen cars and a known target for keyless relay attacks, which now account for more than 70% of UK vehicle thefts.

By Trim & Engine

BMW 3 Series insurance group & premium by trim (2026)

Model / engine	Typical insurance group	Representative annual premium
318i / 318d SE Pro (petrol/diesel)	24–27	£1,100–£1,350
320i M Sport (petrol)	28–30	£1,200–£1,450
320d M Sport (diesel)	28–31	£1,250–£1,500
330i M Sport (petrol)	32–34	£1,450–£1,700
330e M Sport (plug-in hybrid)	32–34	£1,500–£1,750
330d xDrive M Sport (diesel)	38–41	£1,650–£1,950
M340i / M340d xDrive	39–42	£1,900–£2,600
M3 / M3 Competition	43–50	£2,800–£4,500+

Sources: Thatcham insurance groups via Parkers (BMW 3-Series Saloon 2019+, groups 24–42); Finder UK & hamuch.com BMW 3 Series average comprehensive premium £1,372 (Feb 2026); ABI Q1 2026 market average £560. Premium ranges are representative composite estimates anchored to published averages — not quotes — and vary widely by age, postcode and history. Refresh: 2 September 2026.

The cheapest 3 Series to insure is an entry 318i or 318d SE in group 24–27. A diesel 320d typically lands one to three groups above the equivalent 320i petrol because of its higher value and torque. The 330e plug-in hybrid does not save on insurance versus the petrol 330i — battery and high-voltage repair costs offset any green discount. The jump from a 320d to an M340i can add £700–£1,200 a year; a full-fat M3 roughly doubles the mainstream premium.

By Driver Age

320d M Sport: representative premium by driver age

Driver age	Representative annual premium	Notes
21–24	£2,600–£3,400	Group 30 car; many insurers decline under-25s
25–29	£1,900–£2,400	Telematics can cut 15–25%
30–39	£1,400–£1,650	Near the model average
40–49	£1,050–£1,300	Cheapest band for most postcodes
50–59	£1,000–£1,250	Lowest claims frequency
60–69	£1,050–£1,300	Saga, LV= and Aviva competitive
70+	£1,350–£1,800	Premiums rise again with age

Sources: Representative composite estimates for a group-30 BMW 320d M Sport on comprehensive cover, anchored to the £1,372 model average (Finder/hamuch, Feb 2026) and ABI age-banding. Illustrative — your quote depends on postcode, mileage, no-claims discount and convictions. Refresh: 2 September 2026.

Cheapest Cover

Who are the cheapest insurers for a BMW 3 Series?

No single insurer is cheapest for everyone — the 3 Series is mainstream enough that all the big comparison-site panels will quote it, so always run a full comparison. As a guide to where each tends to be competitive in 2026:

Admiral & Hastings Direct — usually keenest for 30–50-year-olds in mainstream 320i/320d trims; strong multi-car options.
LV= and Aviva — competitive for low-mileage and 50+ drivers; good for protected no-claims discount.
Direct Line & Churchill — off-comparison brands; worth a direct quote as they are not on Compare the Market or MoneySuperMarket.
Saga & Rias — often cheapest for over-60s in a 3 Series.
Adrian Flux, Sky Insurance & Greenlight — specialist brokers for M340i, M3, modified or imported cars where mainstream panels load heavily.
Marmalade, Veygo & Carrot — telematics/black-box options that can cut a young driver's 3 Series premium by 15–25%.

Five legitimate ways to lower a 3 Series quote: (1) choose a lower trim — a 320i SE beats a 330d M Sport by several insurance groups; (2) add a low-risk named driver (never list them as main driver — that is fronting, and it is fraud); (3) fit a Thatcham-approved tracker or aftermarket immobiliser, which directly cuts the theft loading; (4) park off-road or in a garage and keep keys in a Faraday pouch to defeat relay attacks; (5) pay annually and raise your voluntary excess if you can absorb it.

Theft & Repair Risk

Why the 3 Series carries a theft and repair loading

The BMW 3 Series consistently appears among the UK's top-five most-stolen cars, far more often than its share of the car parc would suggest. The reason is the keyless relay attack: thieves use a pair of radio relays to extend the signal from a key fob inside the house to the car on the driveway, unlocking and starting it in under 60 seconds. Relay attacks rose from around 14% of UK thefts in 2019 to more than 70% by 2024, and German prestige saloons are prime targets. UK insurers paid out £1.24 billion in vehicle-theft claims in 2024 (ABI), a cost spread across all premiums.

Repair cost is the second loading. With the ABI reporting that £1.9 billion of the £2.9 billion paid in Q1 2026 claims went on vehicle repairs and the average damage claim reaching £3,699, marque-specific parts, calibrated ADAS sensors and BMW-approved bodyshop labour make even a modest 3 Series bump expensive to put right. Newer 3 Series registered after 1 August 2024 are rated under the ABI/Thatcham Vehicle Risk Rating (VRR) system rather than the old 1–50 groups, which scores security, safety, performance and repairability across five 1–99 sub-ratings — so two visually similar cars can price differently depending on their security spec.

Common Questions

BMW 3 Series insurance FAQs

What insurance group is a BMW 3 Series?

The current (2019-on) BMW 3 Series saloon spans insurance groups 24 to 42 out of 50. Entry 318i and 318d SE models sit in groups 24–27, the volume 320i and 320d M Sport in groups 28–31, the 330i and 330e around 32–34, and the 330d xDrive in 38–41. The M340i and M340d reach 39–42, while the full M3 sits in groups 43–50. Cars registered after 1 August 2024 use the newer Vehicle Risk Rating system instead of a single group number.

Why is BMW 3 Series insurance more expensive than a Ford Focus?

A Ford Focus typically sits in insurance groups 7–20, while a 3 Series is 24–42 — so the BMW carries a higher expected claims cost before any personal factors. Three things drive the gap: higher repair costs (marque parts, aluminium panels, calibrated sensors), higher performance (more powerful engines correlate with more severe claims), and higher theft risk (the 3 Series is a top-five UK theft target). The result is roughly £1,372 a year for a 3 Series versus closer to £700–£900 for an equivalent Focus.

Is a 320d cheaper to insure than a 320i?

Usually the petrol 320i is marginally cheaper to insure than the diesel 320d, because the diesel sits one to three insurance groups higher (28–31 vs 28–30) thanks to its higher list price, torque and repair cost. The difference is typically £50–£150 a year on insurance. Diesel still wins on fuel for high-mileage drivers, so the total cost of ownership often favours the 320d despite the slightly higher premium — run the numbers on your annual mileage.

How much does it cost to insure an M340i or M3?

An M340i or M340d xDrive (insurance groups 39–42) typically costs £1,900–£2,600 a year for a 35–50-year-old with a clean licence — £700–£1,200 more than a 320d. The full M3 / M3 Competition (groups 43–50) usually runs £2,800–£4,500+, and under-30s or city drivers can pay far more. For M cars it is often worth using a specialist performance broker such as Adrian Flux or Sky Insurance rather than a mainstream comparison panel, which tends to load heavily.

Is the BMW 3 Series a theft target?

Yes. The 3 Series is regularly among the UK's five most-stolen cars, mainly because of keyless relay attacks — now more than 70% of all UK vehicle thefts. Thieves relay the fob's signal from inside your home to the car and drive off in under a minute. Mitigate it by keeping keys in a Faraday pouch, fitting a Thatcham-approved tracker or aftermarket immobiliser, using a steering lock, and parking in a garage or on a monitored driveway. These steps can also reduce your premium's theft loading.

Does a 330e plug-in hybrid cost more to insure?

The 330e plug-in hybrid sits in similar insurance groups to the petrol 330i (around 32–34) and does not deliver a meaningful insurance saving. While it is cheaper to run and taxed favourably as a company car, the high-voltage battery and hybrid drivetrain are expensive to repair or replace after a collision, which offsets any efficiency benefit on the insurance side. Expect roughly £1,500–£1,750 a year for a typical driver — slightly above the volume 320d.

Who are the cheapest insurers for a BMW 3 Series?

There is no universal cheapest insurer — it depends on your age, postcode and history. In practice Admiral and Hastings Direct are often keenest for 30–50-year-olds in mainstream trims, LV= and Aviva for low-mileage and older drivers, and Saga for the over-60s. Direct Line and Churchill are not on comparison sites, so quote them directly. For M340i, M3 or modified cars, use a specialist such as Adrian Flux or Sky Insurance. Always compare across at least two comparison sites plus the direct-only brands.

Does the new Vehicle Risk Rating system affect newer 3 Series?

Yes. BMW 3 Series cars registered after 1 August 2024 are rated under the ABI/Thatcham Vehicle Risk Rating (VRR) system rather than the single 1–50 insurance group. VRR scores each car across five separate 1–99 ratings — performance, safety, security, repair cost and repair time — so insurers price more granularly. In practice it means two near-identical 3 Series can be priced differently depending on their security and driver-assistance specification, and well-specced security can now actively lower your premium.

Our sources for this guide

ABI Q1 2026 Motor Insurance Premium Tracker — UK average premium £560; £1.9bn of £2.9bn Q1 claims on repairs; average accidental-damage claim £3,699 — abi.org.uk
Finder UK & hamuch.com — BMW 3 Series average comprehensive premium £1,372/year (Feb 2026) — finder.com
Parkers / Thatcham Research — BMW 3-Series Saloon (2019+) insurance groups 24–42 by trim — parkers.co.uk
ABI vehicle-theft data — £1.24bn paid in theft claims in 2024; relay attacks now 70%+ of UK thefts
ABI / Thatcham Vehicle Risk Rating — replacement rating system for cars registered from 1 August 2024

Reviewed by the Car Insurance Expert editorial team

Reviewed by the Car Insurance Expert editorial team (motor pricing desk). Methodology: insurance groups taken from Thatcham/Parkers; premium figures anchored to published ABI and aggregator averages, with trim and age ranges presented as clearly-labelled composite estimates rather than live quotes. We do not sell insurance and have no insurer affiliations.

Spotted an error or want to suggest content? Email editorial@carinsuranceexpert.co.uk.

Last updated: 2 June 2026 · Next scheduled review: 2 September 2026