
MODEL SPECIALISTS · BMW 3 SERIES
BMW 3 Series servicing & repair
E90, F30 or G20 — saloon, Touring or 330e. The 3 Series is the car we see most, and we know every generation’s habits inside out.
GENERATION BY GENERATION
What we look for on yours
Every generation of 3 Series has its own patterns. Knowing them means we catch small issues at service time — before they become big invoices.
G20 / G21
2019 — present · incl. 330e plug-in
The current car. Condition-based servicing, over-the-air software and high-voltage hybrid variants.
COMMON CHECKPOINTS
•Coolant system checks on B48/B58 engines
•Oil filter housing seepage inspection
•330e high-voltage battery health reports
•Software campaigns & recall status via BMW systems
F30 / F31
2012 — 2019
Hugely popular used buy. Great engines that reward proactive maintenance at this age and mileage.
COMMON CHECKPOINTS
•Timing chain condition on N47 diesels
•EGR cooler recall & inspection (diesel)
•Turbo actuator & VANOS solenoid behaviour
•Rear coil spring & suspension bush wear
E90 / E91
2005 — 2012
A modern classic in the making. Well worth maintaining properly — and cheap to keep right if you do.
COMMON CHECKPOINTS
•Electric water pump & thermostat health
•Injector & injector seal condition
•DPF regeneration & swirl flap checks (diesel)
•Front suspension arm & bush wear
SERVICE INTERVALS
What your 3 Series needs, and when
Your car's Condition Based Servicing adjusts these to how you drive — we read the live data from the car and confirm before quoting.
Typical guide intervals shown for petrol and diesel models; 330e hybrid items on request.
ITEMTYPICAL INTERVAL
Engine oil & filter10,000 mi / 12 months
Micro / cabin filter2 years
Brake fluid2 years
Air filter3 years / 30,000 mi
Spark plugs (petrol)4 years / 40,000 mi
Fuel filter (diesel)3 years / 30,000 mi
Vehicle check & MOTEvery 12 months

WHY OWNERS CHOOSE DACK
The 3 Series we see most — for a reason
Genuine parts, dealer diagnostics and a digital service record stamp on every visit — plus Service Club discounts that make proper maintenance affordable at any age or mileage.
✓All engines: petrol, diesel and 330e plug-in hybrid
✓Saloon, Touring and Gran Turismo
✓M340i and M3 welcome — performance experience in-house
