F40 · 2019–2024
Built from 2019 to 2024, the 120d / 120d xDrive uses the 140 kW B47 four-cylinder diesel engine. Identify it by the kW figure on the registration document; an oil change takes 5.5 l, and the car itself calculates its service dates.
Figures apply to the cited configuration and market; equipment and transmissions may vary by production date.
Specification source : [1] BMW Group [2] BMW Group [4] BMW Group [5] BMW Group
1,995 cc four-cylinder diesel turbo, B47 family (ADAC engine code B47C20B): 140 kW (190 PS) and 400 Nm. Gearbox: eight-speed Steptronic automatic only. BMW quotes 0–100 km/h in 7.3 s and 231 km/h for the 120d, 7.0 s and 230 km/h for the 120d xDrive. WLTP combined consumption on BMW’s 03/2021 sheet: 5.6–4.9 l/100 km (120d), 5.8–5.1 l/100 km (120d xDrive). The 120d xDrive arrived at launch in 2019 with all-wheel drive; the front-wheel-drive 120d followed in March 2020. Engine and output are identical, and both have the eight-speed automatic as standard.
Oil change: 5.5 l according to BMW’s 03/2021 specification sheet (“oil change”). The 05/2019 sheet gives the same quantity for the 120d xDrive. For top-ups, the handbook allows up to 1 litre of BMW Longlife-04 or Longlife-12 FE, SAE 0W-30, 5W-30, 0W-40 or 5W-40 (ACEA C2 or C3 if unavailable), with no additives. The level is measured electronically: it is monitored while driving, and a detailed measurement can be started with the car stationary, level and warm, under CAR › Vehicle status › Engine oil level. Only add oil when the car asks for it, by the quantity it displays.
The car calculates each due date from how it is used (Condition Based Service) and briefly shows the next date or remaining distance when switched on; details are under CAR › Vehicle status › Service required. BMW’s regular maintenance covers engine oil, brake fluid, a vehicle check, the air filter, the cabin microfilter and the fuel filter. Brake fluid is counted in time and periods with the battery disconnected are not counted: have the workshop update the time-based items. AdBlue comes on top: at least 5 litres at the yellow warning, 10 litres if the tank is empty (ISO 22241-1 fluid). Neither the handbook nor BMW’s list sets a mileage or period for these items: the dates are the ones your car displays.
The BMW documents consulted do not describe this engine’s timing drive. It appears neither in the handbook nor in BMW’s regular maintenance list: no replacement is scheduled. An unusual noise at start-up or idle still calls for a diagnosis.
Check the power on the registration document (140 kW) and the first-registration date. Note the items and dates shown under “Service required”. Give the service advisor the key the car was last driven with: the car stores its service data in it. Ask for 5.5 l of a BMW-approved oil, then check that the work is entered in the electronic service history, which a later owner can view. Also check the AdBlue level (CAR › Vehicle status › AdBlue): BMW expects one top-up between services as a rule.
Source : [7]
Due date calculated by CBS
Oil change at the date the car displays; do not run past it. Top-up: up to 1 litre of BMW Longlife-04 or Longlife-12 FE oil, SAE 0W-30, 5W-30, 0W-40 or 5W-40 (ACEA C2 or C3 if unavailable). No additives.
Source [7]As the service requirement dictates
BMW lists as regular maintenance: brake fluid, a vehicle check to BMW specifications, air filter, cabin microfilter and fuel filter. Each item is triggered by the service requirement the car calculates.
Source [8]Calendar-based (CBS)
Counted in time, not kilometres. Periods with the battery disconnected are not counted: have the workshop update the time-based items (brake fluid, and where applicable oil and microfilter). The handbook does not state the period.
Source [7]At the reserve warning
AdBlue to ISO 22241-1, filler next to the fuel cap. Yellow warning: add at least 5 litres; tank empty: at least 10 litres, or the car will not restart. BMW expects one top-up between services as a rule, done by the workshop.
Source [7]Regular check, engine cold
Level between the Min and Max marks in the filler neck, engine cold. BMW recommends coolant to BMW LC-18, mixed 50:50 with water; do not mix additives of different colours. Up to two expansion tanks depending on the engine.
Source [7]Only the driveline: all-wheel drive on the xDrive, which BMW quotes at 7.0 s for 0–100 km/h against 7.3 s, with WLTP consumption of 5.8–5.1 l/100 km against 5.6–4.9. Same B47C20B engine code in the ADAC catalogue and the same 5.5 l of oil. The model designation is on the registration document.
No: BMW lists both the 120d and the 120d xDrive with the eight-speed Steptronic automatic only.
EN 590 diesel with up to 7 % biodiesel (B7) according to BMW’s handbook; at minimum B10 or paraffinic diesel to EN 15940 (XTL). Never pure methyl ester or petrol: after a misfuelling, do not start the engine.
Source : [7]
At the yellow warning, at least 5 litres; if the tank has run empty, at least 10 litres, or the car cannot be restarted once switched off. Use ISO 22241-1 fluid; the filler is next to the fuel filler, and the exact quantity is shown under CAR › Vehicle status › AdBlue.
Source : [7]
Electronically: the level is monitored while driving and shown under CAR › Vehicle status › Engine oil level after about 30 minutes of normal driving. For a detailed measurement, park on level ground with the engine warm and the gearbox in neutral or P, then start the measurement in the same menu.
Source : [7]
BMW Group · EN · Europe (ACEA) · PDF p. 2 (launch dates), pp. 13–14 (xDrive, limited-slip differential), pp. 16–20 (engines, transmissions) · Accessed 08/10/2026
BMW Group · EN · Europe (ACEA) · pp. 1–10; footnote 1) “oil change”; consumption: WLTP values translated back to NEDC (provisional) · Accessed 08/10/2026
BMW (UK) Ltd. · EN · United Kingdom · pp. 1–2: dimensions compared with the predecessor, front-wheel-drive architecture, luggage capacity · Accessed 08/10/2026
BMW Group · EN · Europe (German base data) · Section “New drive variants for the BMW 1 Series…”: BMW 120d from March 2020 · Accessed 08/10/2026
BMW Group · EN · Europe (German base data) · pp. 1–18; footnote 1) oil change volume; consumption in NEDC and WLTP · Accessed 08/10/2026
BMW Group · EN · Germany · Press release: fourth generation in production, third-generation deliveries to end of June 2024 · Accessed 08/10/2026
BMW AG (online copy: Kfz-Handbuch.de) · DE · Germany · p. 182 (Servicebedarf), pp. 349–357 (Kraftstoff, AdBlue, Motoröl, Kühlmittel), pp. 360–361 (Condition Based Service, Service Historie) · Accessed 08/10/2026
BMW AG · DE · Germany · Section “Die Leistungen von BMW Service Inclusive” · Accessed 08/10/2026
ADAC · DE · Germany · Technische Daten: Motorcode, Leistung, Drehmoment, Modellstart/-ende, Baureihenende · Accessed 08/10/2026
ADAC · DE · Germany · Technische Daten: Motorcode, Leistung, Drehmoment, Modellstart/-ende, Baureihenende · Accessed 08/10/2026
BMW Group · EN · Europe · Press kit summary: 48-volt mild hybrid technology introduced with the fourth generation · Accessed 08/10/2026