G26 · 2025–…

BMW M440i xDrive Gran Coupé G26 · 392 hp (since 2025)

Since autumn 2025 the M440i xDrive Gran Coupé gets the 288 kW (392 hp) version of the 3.0-litre six-cylinder. To check this is your version, compare with the 288 kW on the registration document.

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Identify the car and prepare its maintenance

Technical specifications

Fuel
Petrol
Power
392 PS / 288 kW
Displacement
2 998 cm³
Torque
540 Nm
Cylinders
6
Engine code
B58 (B58B30P)
Period covered
2025–…
Documented market
Europe

Transmission

  • Automatic · 8 speeds · 2025

Figures apply to the cited configuration and market; equipment and transmissions may vary by production date.

Specification source : [2] BMW Group

What distinguishes this version

BMW announces 288 kW (392 hp), 9 kW (12 hp) of it from the mild-hybrid system, and 540 Nm: 13 kW and 40 Nm more than before, and 0.1 s less from 0 to 100 km/h. WLTP combined: 7.8 l/100 km, 179 g/km CO2. Built from November or December 2025. In the Coupé, ADAC codes this engine B58B30P.

Source : [2] [8]

Engine oil: quantity

BMW has not published an oil-change quantity for this engine in the documents we read; the 275 kW M440i xDrive Gran Coupé took 7.2 l. Ask the workshop for the quantity specified for your VIN. Approvals and viscosity grades: see the “B58 engine” block on this page.

Source : [2] [5]

What the service display tracks

Due dates are calculated by Condition Based Service from how the car is used. BMW’s regular maintenance covers engine oil, brake fluid, a vehicle check, air filter, cabin microfilter and spark plugs, each triggered by the calculated service requirement. BMW’s list sets no mileage or period: the reference is the date your car displays.

Source : [1]

Prepare the next service

Check the power on the registration document (288 kW) and note the items and dates the car displays. Ask for the oil quantity specified for your VIN. Have the VIN checked against the recalls listed by ADAC and keep a record of every job.

Source : [9]

BMW B58 petrol engine (3.0 l, six-cylinder)

This applies to every car fitted with the B58 engine.

What the B58 is

Inline six-cylinder petrol engine of 2,998 cc (82 mm bore, 94.6 mm stroke, 11:1 compression) with twin-scroll turbocharger, direct injection, double VANOS, a closed-deck crankcase and indirect charge-air cooling integrated into the intake. BMW places it in the same modular family as the B38, B48 and B57, and launched it in mid-July 2015 in the F30 340i (240 kW/326 PS and 450 Nm according to ADAC, which codes it B58B30A). BMW designates the version in the facelifted 2 Series M240i (2017) as B58B30M0. In 2021 the G42 M240i xDrive Coupé quotes 275 kW (374 hp) and 500 Nm from the same displacement.

Source : [11] [15] [12] [13]

Engine oil

BMW handbooks only list oils for topping up and leave the oil change to a qualified workshop; the list depends on the handbook edition. 5 Series G30 handbook (VI/20): BMW Longlife-04, -12 FE or -17 FE+, in SAE 0W-20, 5W-20, 0W-30, 5W-30, 0W-40 or 5W-40; otherwise up to 1 litre of ACEA C2 or C3. 2 Series Coupé G42 handbook (VI/22): BMW Longlife-12 FE or -17 FE+, in SAE 0W-20 or 0W-30 only; otherwise up to 1 litre of ACEA C2 or C5. No additives. Quantities published by BMW: 6.5 l for the B58B30M0 of the M240i (2017, “filling quantity”) and 7.2 l for an oil change on the G42 M240i xDrive Coupé (2021). No quantity is sourced here for other installations.

Source : [16] [14] [12] [13]

Timing drive

Chain, on the transmission side, confirmed by ADAC. According to BMW’s training document it is two-part: a lower chain drives an intermediate shaft, which passes the drive to the upper camshaft chain; the oil pump has its own chain and the tensioners are hydraulic with spring preload. The inertia of the transmission reduces the torsional vibrations acting on the chain. The sources consulted give no replacement interval.

Source : [11] [15]

What changed over the years

2015: launch in the F30 340i, replacing the N55 (2,979 cc, 225 kW); Euro 6b according to ADAC. 2017: facelifted 2 Series, M240i with B58B30M0. 2021: G42 M240i xDrive Coupé, 275 kW (374 hp) and 500 Nm, Euro 6d. The sources consulted do not detail the internal changes between these versions, so nothing more should be inferred.

Source : [11] [15] [12] [13]

Maintenance and records

Other maintenance items — petrol

As the service requirement dictates

BMW lists as regular maintenance: brake fluid, a vehicle check to BMW specifications, air filter, cabin microfilter and spark plugs. Each item is triggered by the service requirement the car calculates.

Source [1]

Questions about this version (5)

What changes compared with the 374 hp version?

Power rises from 275 to 288 kW and torque from 500 to 540 Nm, with 0.1 s less from 0 to 100 km/h according to BMW. ADAC lists the 275 kW version until 09/2025. The documents we read give no detail of the internal changes.

Source : [2] [10]

Has BMW published an oil quantity?

Not in the documents we read. The 07/2024 Gran Coupé sheet gives 7.2 l for the 275 kW M440i xDrive; for the 288 kW version, have the specified quantity read for your VIN.

Source : [2] [5]

Which fuel?

For M Performance models such as this one, the handbook asks for Super Plus RON 98 to reach the published figures; the minimum remains unleaded RON 91, and ethanol is allowed up to 25% (E10, E25). Never use leaded petrol or metallic additives. (These rules come from the Coupé handbook, which shares the same engines.)

Source : [6] [7]

Which recalls can apply to this version?

ADAC lists three BMW starter recalls covering this generation of the 4 Series: October 2025 (built 09/2015–09/2021), February 2026 (05/2020–10/2024) and July 2026 (07/2020–02/2026). A relay poorly protected against water, or wear deposits in it, can cause a short circuit and a fire; the starter is replaced. Not every car is affected: have your VIN checked.

Source : [9]

How should a new car of this version be run in?

Up to 2,000 km, do not exceed 4,500 rpm or 160 km/h, avoid full load and kick-down and do not use Launch Control; 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 : [6]

Documentary sources

  1. [1] BMW Service Inclusive — Die Leistungen (bmw.de, archived 15/04/2026)

    BMW AG · DE · Germany · Section “Die Leistungen von BMW Service Inclusive” · Accessed 08/10/2026

  2. [2] BMW model updates, autumn 2025

    BMW Group · EN · Europe (German base data) · pp. 1–2 (more powerful 3.0-litre six-cylinder: 288 kW/392 hp, mild hybrid contribution 9 kW/12 hp, 540 Nm; BMW M240i xDrive Coupé consumption and CO2), p. 3 (overview table; start of production November or December 2025) · Accessed 08/10/2026

  3. [3] BMW Media information 06/2021 — The all-new BMW 4 Series Gran Coupé (press kit, long version)

    BMW Group · EN · Europe (German base data) · p. 2 (model variants at launch), pp. 4–6 (Munich plant, market launch November 2021, dimensions, boot 470–1,290 l) · Accessed 08/10/2026

  4. [4] BMW model update measures for spring 2023 (press release)

    BMW Group · EN · Europe (German base data) · Section “BMW 4 Series and BMW M4 now with BMW Operating System 8 and BMW Curved Display” (March 2023) · Accessed 08/10/2026

  5. [5] Technical data — BMW 4 Series Gran Coupé, valid as of July 2024

    BMW Group · EN · Europe (German base data) · 420i to 430d xDrive Gran Coupé: output, torque, engine oil (oil change), performance, emission rating · Accessed 08/10/2026

  6. [6] BMW 4er Coupé (G22) Betriebsanleitung, Sach-Nr. 01405A11254 – VI/20 (online copy)

    BMW AG (online copy: Kfz-Handbuch.de) · DE · Germany · pp. 175–176 (Servicebedarf, Service Historie), 330–331 (Einfahren, Partikelfilter), 380–382 (Kraftstoff, AdBlue), 386–390 (Motoröl, Kühlmittel), 392–393 (CBS), 415–418 (Gewichte, Anhängelasten) · Accessed 08/10/2026

  7. [7] BMW 4er Coupé (G22) Betriebsanleitung, Sach-Nr. 01405A9A824 – X/23 (online copy)

    BMW AG (online copy: Kfz-Handbuch.de) · DE · Germany · pp. 353–354 (Kraftstoffqualität), 360–361 (Motorölsorten), 362 (Kühlmittel), 365 (Condition Based Service, Standzeiten) · Accessed 08/10/2026

  8. [8] ADAC Autokatalog — BMW M440i Coupé xDrive Steptronic Sport (ab 09/25)

    ADAC · DE · Germany · Technische Daten: Motorcode, Leistung, Drehmoment, Hubraum, Antriebsart, Nockenwellensteuerung, Modellstart/-ende, Schadstoffklasse; Rückrufe & Mängel · Accessed 08/10/2026

  9. [9] ADAC Autokatalog — BMW M440i Gran Coupé xDrive Steptronic Sport (06/23 - 06/24)

    ADAC · DE · Germany · Technische Daten: Motorcode, Leistung, Drehmoment, Hubraum, Antriebsart, Nockenwellensteuerung, Modellstart/-ende, Schadstoffklasse; Rückrufe & Mängel · Accessed 08/10/2026

  10. [10] ADAC Autokatalog — BMW M440i Gran Coupé xDrive Steptronic Sport (07/24 - 09/25)

    ADAC · DE · Germany · Technische Daten: Motorcode, Leistung, Drehmoment, Hubraum, Antriebsart, Nockenwellensteuerung, Modellstart/-ende, Schadstoffklasse; Rückrufe & Mängel · Accessed 08/10/2026

  11. [11] BMW Technical training — B58 Engine

    BMW of North America — Technical training (archive.org copy) · EN · USA · Information status April 2015 · §1.2 Modular design · §1.3 Technical data (engine oil specification) · §2.2.4 Chain drive · Accessed 08/10/2026

  12. [12] BMW UK Technical data — 2 Series Coupé LCI [F22LCI]

    BMW Group UK · EN · United Kingdom · Effective production week 44/2017 · engine type (B58B30M0, B47D20U0, B47D20O0, B47D20T0), gearbox, “Engine oil (filling quantity)” · M2 Coupé LCI · Accessed 08/10/2026

  13. [13] BMW Technical specifications 07/2021 — BMW 2 Series Coupé (220i, M240i xDrive, 220d)

    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

  14. [14] BMW 2er Coupé (G42) Betriebsanleitung, Sach-Nr. 01405A5E757 – VI/22 (online copy)

    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

  15. [15] ADAC — BMW Série 3, fiche technique lci340i

    ADAC · DE · Europe / Allemagne · Technische Daten : moteur, puissance, cylindrée, distribution et dates ; périmètre européen documenté. · Accessed 08/10/2026

  16. [16] BMW 5er Limousine (G30) Betriebsanleitung, Sach-Nr. 01405A11307 – VI/20 (online copy)

    BMW AG · DE · Germany · pp. 405–406: Motorölsorten zum Nachfüllen, geeignete und alternative Motorölsorten, Viskositätsklassen (Fußnote zu Longlife-12 FE und Dieselmotoren 25d/35d/40d/50d) · Accessed 08/10/2026

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