G42 · 2022–…
The G42’s only diesel, the 220d has been available since the early-2022 launch. Its 140 kW four-cylinder is assisted by an 8 kW 48-volt starter generator: there is nothing to plug in. An oil change takes 5.5 l, and AdBlue needs watching too.
Figures apply to the cited configuration and market; equipment and transmissions may vary by production date.
Specification source : [3] BMW Group [4] BMW Group [7] BMW Group
1,995 cc four-cylinder diesel (ADAC engine code B47D20B): 140 kW (190 hp) at 4,000 rpm and 400 Nm between 1,750 and 2,500 rpm. Two-stage turbocharging with a variable-geometry low-pressure turbocharger, common-rail injection with solenoid injectors at up to 2,500 bar. A 48-volt starter generator in the belt drive adds up to 8 kW (11 hp). Exhaust aftertreatment with SCR catalytic converter and particulate filter according to ADAC. Eight-speed Steptronic, rear-wheel drive; Steptronic Sport standard since 2024. BMW quotes 6.9 s for 0–100 km/h and 237 km/h; WLTP combined 5.1–4.7 l/100 km (132–122 g/km) under Euro 6d at launch, 5.4–4.9 l/100 km (141–129 g/km) under Euro 6e on the 06/2024 sheet. Timing chain according to ADAC.
Oil change: 5.5 l according to BMW’s 07/2021 and 06/2024 specification sheets. The G42 handbook gives the same oils for diesel as for petrol. For top-ups, the G42 handbook (VI/22) lists BMW Longlife-12 FE or Longlife-17 FE+, SAE 0W-20 or 0W-30 (if unavailable, up to 1 litre of ACEA C2 or C5), with no additives. The level is measured electronically: it is monitored while driving (a value is available after about 30 minutes of normal driving), and a detailed measurement is started with the car level, engine warm and selector in N or P, under MENU › Vehicle apps › Vehicle status › Engine oil level › Oil level measurement › Start measurement. The handbook advises running it after every refuelling. Only add oil when the car asks for it, in the quantity given in the message.
The 48-volt battery (11 Ah according to BMW) sits in the engine compartment under a cover on the passenger side; the 12-volt battery (80 Ah) is in the boot. The handbook rules out any work on or replacement of the 48-volt battery, and says to charge the 12-volt battery only with the engine off, through the jump-start points, bonnet open. When coasting in D, between about 25 and 160 km/h, a mild-hybrid car may use no fuel at all. The particulate filter cleans itself: during a regeneration of a few minutes the engine may run slightly rougher, use more fuel and smoke lightly, and the radiator fan may keep running after switch-off; this is normal.
The car calculates each due date from how it is used (Condition Based Service) and briefly shows the next date or remaining distance after switching on; details, including statutory inspections, are under MENU › Vehicle apps › Vehicle status › Service requirements, and completed work under Service History. BMW’s regular maintenance covers engine oil, brake fluid, a vehicle check, air filter, cabin microfilter and fuel filter. Brake fluid and, where applicable, oil and microfilter also depend on time; periods with the battery disconnected are not counted, so have the workshop update them. Neither the handbook nor BMW’s list sets a mileage or period.
Check the first-registration date and the power on the registration document (140 kW). Note the items and dates shown under MENU › Vehicle apps › Vehicle status › Service requirements. 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 and, if the reserve warning is on, an AdBlue top-up. Have the VIN checked against the starter recalls listed by ADAC, then check that the work is entered in the electronic Service History, which a later owner can also view.
Due date calculated by CBS
Oil change at the date the car displays; do not run past it. Top-up, up to 1 litre: BMW Longlife-12 FE or Longlife-17 FE+, SAE 0W-20 or 0W-30, for petrol and diesel alike. If unavailable, up to 1 litre of ACEA C2 or C5. No additives. Only add the quantity the car’s message asks for.
Source [8]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 [1]Calendar-based (CBS)
Brake fluid and, where applicable, engine oil and the microfilter/activated-carbon filter also depend on time. The G42 handbook states that periods with the battery disconnected are not taken into account: have the workshop update these items. The handbook gives no period.
Source [8]At the reserve warning
AdBlue to ISO 22241-1, filler cap next to the fuel cap. Yellow reserve warning: add at least 5 litres; tank empty: at least 15 litres, or the car will not restart once switched off. BMW recommends having it topped up during regular maintenance; one top-up between services is usually enough. Below −11 °C, only add it just before driving off.
Source [8]No owner intervention
The 48-volt battery sits in the engine compartment, under a cover on the passenger side: do not replace or work on this battery. Charge the 12-volt battery only with the engine off, through the jump-start points in the engine compartment, with the bonnet open.
Source [8]Regular check, engine cold
Level correct just below the Max mark in the expansion tank filler neck, engine cold. BMW recommends coolant to BMW LC-18, mixed 50:50 with water; do not mix additives of different colours. At delivery the tank may be overfilled: the normal level settles with use.
Source [8]In the ADAC Ecotest (09/2022) the 220d averaged 4.9 l/100 km: 5.1 in town, 4.4 out of town and 5.7 on the motorway, with 153 g/km CO2 (well-to-wheel). ADAC awarded four stars out of five, with maximum points for pollutants thanks to the SCR catalytic converter and particulate filter.
Source : [10]
AdBlue to ISO 22241-1, filler next to the fuel cap. At the yellow reserve warning, add at least 5 litres; if the tank has run empty, at least 15 litres, or the car will not restart once switched off. BMW recommends having it topped up during regular maintenance; one top-up between services is usually needed. Below −11 °C, only add it just before driving off.
Source : [8]
The handbook specifies diesel to EN 590 (and ASTM D975), ideally with up to 7% biodiesel (B7); B10 is the minimum quality accepted, and paraffinic diesel to EN 15940 (XTL) is allowed. Never petrol; only use diesel additives rated as suitable.
Source : [8]
ADAC lists three BMW starter recalls for this generation, all for fire risk and all fixed by replacing the starter: October 2025 for cars built up to 09/2021 (relay insufficiently protected against water), February 2026 for 05/2020–10/2024 and July 2026 for 07/2020–02/2026 (wear deposits in the relay). Not every car is affected: have your VIN checked.
Up to 2,000 km, do not exceed 3,500 rpm or 150 km/h, and avoid full load and kick-down; then increase gradually. New tyres need a gentle approach for the first 300 km, the brakes for about 500 km. The same rules apply after these parts are replaced.
Source : [8]
BMW AG · DE · Germany · Section “Die Leistungen von BMW Service Inclusive” · Accessed 08/10/2026
BMW Group · EN · Europe (German base data) · Sections on the BMW 1 Series (standard equipment, tyre repair kit, BMW Digital Key) and M135 xDrive consumption (WLTP) · Accessed 08/10/2026
BMW Group · EN · Europe (German base data) · p. 2 (model variants at launch), pp. 4–5 (market launch early 2022, production in San Luis Potosí), pp. 6–7 (dimensions and luggage compartment vs predecessor), pp. 18–21 (engines, eight-speed Steptronic, BMW xDrive, M Sport differential) · Accessed 08/10/2026
BMW Group · EN · Europe (ACEA) · pp. 1–6; “Engine oil”, footnote 2) “Oil change”; 48V mild hybrid output and battery (220d); consumption WLTP combined · Accessed 08/10/2026
BMW Group · EN · Global · Press release: production start in San Luis Potosí, exclusive production for the global market, launch early 2022 in Europe · Accessed 08/10/2026
BMW Group · EN · Europe (German base data) · p. 1 (market launch August 2024, production in San Luis Potosí), pp. 1–2 (M Sport Package standard), pp. 5–6 (engines, Steptronic Sport, M Sport suspension), p. 8 (M Technology Package for the M240i) · Accessed 08/10/2026
BMW Group · EN · Europe (ACEA) · pp. 1–10; “Engine oil”, footnote 1) “Oil change volume”; consumption WLTP combined; emission rating Euro 6e · Accessed 08/10/2026
BMW AG (online copy: Kfz-Handbuch.de) · DE · Germany · pp. 157–158 (Servicebedarf), 260–261 (Einfahren, Partikelfilter), 278 (Segeln), 311–315 (Kraftstoff, AdBlue), 316–321 (Motoröl, Kühlmittel), 322–323 (CBS, Service Historie), 326–328 (Batterie, Mild-Hybrid), 347–351 (Gewichte, Anhängelasten) · Accessed 08/10/2026
ADAC · DE · Germany · Technische Daten: Motorcode, Leistung, Drehmoment, Hubraum, Nockenwellensteuerung, Modellstart/-ende, Schadstoffklasse; Rückrufe & Mängel · Accessed 08/10/2026
ADAC · DE · Germany · Technische Daten: Motorcode, Schadstoffklasse, Abgasreinigung; ADAC Ecotest 09/2022 (Testverbrauch); Rückrufe & Mängel (alle Rückrufe) · Accessed 08/10/2026
ADAC · DE · Germany · Technische Daten: Motorcode, Leistung, Drehmoment, Hubraum, Nockenwellensteuerung, Modellstart/-ende, Schadstoffklasse; Rückrufe & Mängel · Accessed 08/10/2026