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Illustrative car maintenance workshop
BMW

BMW servicing: CBS, M models and BMW i

BMW servicing combines vehicle-specific maintenance with the Condition Based Service information shown in the car.

BMW · explore your maintenance areas

1 Series · Service display & history

BMW 1 Series

Combustion generations; selected 120/123 versions use 48V mild hybrid

Service display & history

Read the vehicle service message alongside the exact handbook and previous work.

1 Series service guide →
Select an area to highlight it. Schematic only; fitment and maintenance depend on year, powertrain and equipment.

1 Series · maintenance by system

1 Series · care by system
AreaScheduledWear checksFault tests
Service display & history✓——
Engine oil & filters✓—✓
Transmission✓—✓
48V mild-hybrid system✓—✓

1 Series · care triggers

ScheduledFollow this version’s handbook or service display.

Wear checksInspect condition before replacing worn parts.

Fault testsInvestigate symptoms or warnings with the relevant tests.

Care categories, not a replacement timetable. Exact requirements depend on model year, powertrain and fitted equipment.

BMW: maintenance essentials

BMW servicing combines vehicle-specific maintenance with the Condition Based Service information shown in the car. A 3 Series engine service, an M-car brake job and an i4 or iX inspection are different tasks. The dashboard service requirements are a useful starting point, not a substitute for identifying the exact model and fitted equipment.

Understanding Condition Based Service

CBS identifies service requirements for monitored items rather than treating every consumable as due at one universal mileage. BMW Hong Kong also publishes local regular-inspection guidance. The chart separates a general visit interval from individual items called for by the car. A due engine-oil service does not automatically mean that discs, pads and every fluid must be replaced together.

M brakes, battery registration and BMW i

M and optional brake packages can use different parts from other versions of the same series. Low-voltage battery work may require registration, depending on the vehicle. Electric i4, i7 and iX models do not use a combustion-engine oil service, while their tyres, brakes, suspension and cabin systems still require appropriate care.

BMW: frequently asked questions

Understanding Condition Based Service: what should BMW owners know?

CBS identifies service requirements for monitored items rather than treating every consumable as due at one universal mileage. BMW Hong Kong also publishes local regular-inspection guidance. The chart separates a general visit interval from individual items called for by the car. A due engine-oil service does not automatically mean that discs, pads and every fluid must be replaced together.

M brakes, battery registration and BMW i: what should BMW owners know?

M and optional brake packages can use different parts from other versions of the same series. Low-voltage battery work may require registration, depending on the vehicle. Electric i4, i7 and iX models do not use a combustion-engine oil service, while their tyres, brakes, suspension and cabin systems still require appropriate care.