G20 / G21 · 2019–2022

BMW 320d G20 / G21 · 190 hp · B47D20B (2019–2022)

The 320d G20 / G21 (2019–2022) produces 140 kW (190 hp). Two-stage turbocharging and 2,500-bar injection according to BMW; 48-volt mild hybrid standard with Steptronic from March 2020. BMW specifies 5.5 l of oil per change.

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Technical specifications

Fuel
Diesel
Power
190 PS / 140 kW
Displacement
1 995 cm³
Torque
400 Nm
Cylinders
4
Engine code
B47D20B
Period covered
2019–2022
Documented market
Europe

Transmission

  • Automatic · 8 speeds
  • Manual · 6 speeds · 2019–2020

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

Specification source : [2] BMW Group [3] BMW Group [4] BMW Group [5] BMW Group [6] BMW Group

What sets this version apart

140 kW (190 hp) and 400 Nm: four-cylinder diesel engine of 1,995 cc, engine code B47D20B according to ADAC. Period: 03/2019–06/2022 (ADAC dates). One page for the G20 saloon and the G21 Touring. Eight-speed Steptronic automatic; a six-speed manual was also offered (2019–2020, according to ADAC). Rear-wheel drive, or optional xDrive (ADAC entries from 03/2019). 0–100 km/h in 7.1 s and 240 km/h for the saloon according to BMW (10/2018 sheet). With Steptronic: 6.8 s and 240 km/h. Two-stage turbocharging and 2,500-bar injection according to BMW; 48-volt mild hybrid standard with Steptronic from March 2020.

Source : [3] [4] [5] [2] [6] [8] [9] [10] [11]

Engine oil: quantity and checks

Oil-change quantity published by BMW: 5.5 l (10/2018, 03/2019, 06/2019 specification sheets, “Engine oil” line, footnote “oil change”). Approvals and viscosities: see the engine block below. The G20 handbook (2019–2022) describes electronic measurement: monitoring while driving (a value is available after about 30 minutes) and a detailed measurement with the car level, engine warm, selector in N or P, via CAR › Vehicle status › Engine oil level. Only top up when the message appears, by the quantity shown, without additives.

Source : [3] [4] [5] [7]

48-volt mild hybrid and emissions control

48-volt mild hybrid: 8 kW (11 hp) starter-generator according to BMW; ADAC lists this version as a mild hybrid from 03/2020 (with Steptronic only). Nothing to plug in; the 48-volt battery is a workshop matter. Emissions control by SCR catalyst (AdBlue), NOx storage catalyst and particulate filter according to ADAC; standard Euro 6d-TEMP → Euro 6d-ISC-FCM. AdBlue to ISO 22241-1, filler next to the fuel cap; when the reserve warning starts, add at least 5 litres (G20 handbook).

Source : [8] [9] [10] [11] [7] [3] [4] [5] [2] [6]

What the service indicator tracks

Condition Based Service calculates each due date from actual use; details appear in CAR › Vehicle status › Service requirements, together with the service history. The data are also stored in the key. 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 sets a mileage: the reference is the displayed date, which must not be exceeded.

Source : [7] [1]

Recalls to check

ADAC lists for the 2019–2022 G20/G21: July 2026 (production 07/2020–02/2026) and February 2026 (05/2020–10/2024), wear deposits in the starter relay that can cause a short circuit and fire, starter replaced; October 2025 (09/2015–09/2021), starter relay insufficiently sealed against water, same remedy; May 2022 (01/2022–03/2022), faulty gas generator in the front belt pretensioners, belts checked and replaced if needed. Not every car built in a period is affected: have the VIN checked.

Source : [8] [9] [10] [11]

Preparing the service

Note the output (140 kW) and first-registration date on the registration certificate, then the due dates in the service requirements menu. Hand over the key used on the last drive: it holds the service data. Ask for 5.5 l of a BMW-approved oil for this engine. Mention whether the AdBlue reserve warning has appeared. Have the VIN checked for the recalls listed by ADAC and make sure the work is entered in the electronic service history.

Source : [7] [3] [8]

BMW B47 diesel engine (2.0 l, four-cylinder)

This applies to every car fitted with the B47 engine.

What the B47 is

Inline four-cylinder diesel engine of 1,995 cc (84 mm bore, 90 mm stroke) with common-rail direct injection and turbocharging. Codes published by BMW: B47D20U0 (218d), B47D20O0 (220d) and B47D20T0 (225d) in the 2017 facelifted 2 Series; B47C20U1 (118d) and B47C20O1 (120d xDrive) in the 2019 F40 1 Series. ADAC codes the 48 V mild-hybrid version (140 kW/190 PS, 400 Nm) of the 2020 facelifted G30 520d and the 2022 G42 220d Coupé as B47D20B.

Source : [20] [21] [13] [26] [27] [19]

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. 2 Series Active Tourer F45 handbook (II/17): BMW Longlife-04, or Longlife-12 FE for certain diesels only, in SAE 0W-40, 0W-30, 5W-40 or 5W-30; otherwise up to 1 litre of ACEA C3. F45 facelift handbook (VI/19) / 5 Series G30 handbook (VI/20): BMW Longlife-04 or -12 FE — the handbook adds that Longlife-12 FE is not suitable for the 25d, 35d, 40d and 50d diesels — in SAE 0W-30, 5W-30, 0W-40 or 5W-40 (0W-20 and 5W-20 are excluded for diesels); otherwise up to 1 litre of ACEA C2 or C3. 1 Series F40 handbook (II/22): BMW Longlife-04 or -12 FE, in SAE 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) / Active Tourer U06 handbook (X/24): 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: 5 l for the B47D20U0, O0 and T0 (2017 2 Series, “filling quantity”); 5.5 l for the B47C20U1 and O1 of the F40 1 Series (oil-change quantity) and for an oil change on the G42 220d Coupé (2021). No quantity is sourced here for other installations.

Source : [17] [18] [28] [14] [23] [24] [20] [21] [13] [22] [27]

Timing drive

Chain, according to ADAC. BMW’s training documents on the modular family explain that, because the crankcase is shared by petrol and diesel engines, the timing drive is two-part: a lower chain drives an intermediate shaft, which on the diesels also drives the high-pressure pump, and an upper chain drives the camshafts. The sources consulted give no replacement interval.

Source : [26] [15] [16]

Recall campaign

In October 2018 BMW expanded a technical campaign on the EGR module of certain diesels: glycol leaking from the EGR cooler, combined with soot deposits, can create smouldering particles and, very rarely, melt the intake manifold or cause a fire. About 1.6 million vehicles worldwide, built August 2010 to August 2017, with periods varying by model; the module is checked and faulty parts replaced. BMW does not list engine codes, so have the VIN checked.

Source : [25]

What changed over the years

2017: facelifted 2 Series with B47D20U0/O0/T0. 2019: B47C20 in the F40 1 Series, Euro 6d-TEMP — two turbochargers of different sizes (variable-geometry low-pressure stage, high-pressure stage integrated into the manifold), slide bearings, 2,500 bar injection, single-stage exhaust gas recirculation, particulate filter, NOx adsorption catalyst and AdBlue SCR. 2020: 48 V mild hybrid (B47D20B according to ADAC) in the facelifted 520d, Euro 6d-ISC-FCM, then in the G42 220d Coupé.

Source : [20] [12] [13] [26] [27]

Maintenance and records

Engine oil

Due date calculated by CBS

Change the oil at the date the car displays, without exceeding it: the G20 handbook warns that oil changed too late increases engine wear. Between changes, only add the quantity the message asks for, using an approved oil and no additives.

Source [7]

Other maintenance items — diesel

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]

Time-based items

Calendar-based (CBS)

Brake fluid and, where applicable, engine oil and the microfilter/activated-carbon filter also depend on time. Periods with the battery disconnected are not taken into account: have the workshop update these items. The handbook gives no period.

Source [7]

AdBlue

At the reserve warning

AdBlue to ISO 22241-1, filler next to the fuel cap. When the reserve warning starts, add at least 5 litres; the exact quantity is shown in vehicle status. If AdBlue is at the minimum, the car only becomes drivable again once the display goes out.

Source [7]

Questions about this version (5)

Which engine powers the 190 hp 320d G20 / G21?

A four-cylinder diesel engine of 1,995 cc, code B47D20B according to ADAC, 03/2019–06/2022. The engine block below covers approved oils, timing drive and the history of this family.

Source : [3] [4] [5] [2] [6] [8] [9] [10] [11]

How much oil does the 320d take at an oil change?

Oil-change quantity published by BMW: 5.5 l (10/2018, 03/2019, 06/2019 specification sheets, “Engine oil” line, footnote “oil change”). This is a service quantity: check the electronic level afterwards.

Source : [3] [4] [5]

How much AdBlue should be added, and when?

When the reserve warning starts, at least 5 litres of ISO 22241-1 AdBlue; the exact quantity is shown in vehicle status. If AdBlue reaches the minimum, the car only becomes drivable again once the message clears after refilling.

Source : [7]

Which recalls should be checked on this 320d?

ADAC lists for the 2019–2022 G20/G21: July 2026 (production 07/2020–02/2026) and February 2026 (05/2020–10/2024), wear deposits in the starter relay that can cause a short circuit and fire, starter replaced; October 2025 (09/2015–09/2021), starter relay insufficiently sealed against water, same remedy; May 2022 (01/2022–03/2022), faulty gas generator in the front belt pretensioners, belts checked and replaced if needed. Not every car built in a period is affected: have the VIN checked.

Source : [8] [9] [10] [11]

Is it available as a Touring and with xDrive?

Yes for the G21 Touring, which shares this page with the G20 saloon. Rear-wheel drive, or optional xDrive (ADAC entries from 03/2019).

Source : [3] [4] [5] [2] [6] [8] [9] [10] [11]

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 Media information 09/2018 — The new BMW 3 Series Sedan (press kit, long version)

    BMW Group · EN · Europe (German base data) · p. 2 (model variants at launch), pp. 4–5 (market launch 9 March 2019, plants Munich, Shenyang, San Luis Potosí), pp. 8–12 (engines, two-stage diesel turbocharging, SCR with AdBlue, six-speed manual and eight-speed Steptronic, xDrive) · Accessed 08/10/2026

  3. [3] BMW Technical specifications 10/2018 — The all-new BMW 3 Series Sedan (330i, 320d, 320d xDrive)

    BMW Group · EN · Europe (ACEA) · pp. 1–6; “Engine oil”, footnote 2) “Oil change”; performance; NEDC-equivalent consumption · Accessed 08/10/2026

  4. [4] BMW Technical specifications — The all-new BMW 3 Series Sedan, valid from 03/2019

    BMW Group · EN · Europe (ACEA) · 320i, 320i xDrive, 330i, 330i xDrive, M340i xDrive, 318d, 320d, 320d xDrive, 330d, 330d xDrive: “Engine oil”, footnote “Oil change”; output, torque, 0–100 km/h, top speed · Accessed 08/10/2026

  5. [5] BMW Technical specifications — The new BMW 3 Series Touring, valid from 06/2019

    BMW Group · EN · Europe (ACEA) · 330i, 330i xDrive, 320d, 320d xDrive, 330d xDrive Touring: “Engine oil”, footnote 1) “Oil change”; output, torque, performance · Accessed 08/10/2026

  6. [6] BMW model upgrade measures taking effect in the spring of 2020

    BMW Group · EN · Europe (German base data) · pp. 1–2 (48V mild hybrid standard in 320d and 320d xDrive Sedan/Touring from March/April 2020), p. 4 and table (new 318i Sedan/Touring: 115 kW/156 hp, 250 Nm, 8-speed Steptronic, 0–100 km/h, top speed) · Accessed 08/10/2026

  7. [7] BMW 3er Limousine (G20) Betriebsanleitung, Baujahr 2019–2022 (online copy)

    BMW AG (online copy: Kfz-Handbuch.de) · DE · Germany · pp. 167–168 (Servicebedarf, Service Historie), 312 (Einfahren), 366–368 (AdBlue), 369–372 (Motoröl, Ölmessung, Kühlmittel), 375–376 (Condition Based Service, Service Historie), 404 (Füllmengen) · Accessed 08/10/2026

  8. [8] ADAC Autokatalog — BMW 320d (03/19 – 06/19)

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

  9. [9] ADAC Autokatalog — BMW 320d (07/19 – 01/20)

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

  10. [10] ADAC Autokatalog — BMW 320d Steptronic (03/20 – 06/22)

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

  11. [11] ADAC Autokatalog — BMW 320d Touring Steptronic (03/20 – 06/22)

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

  12. [12] BMW Media information 05/2019 — The all-new BMW 1 Series (press kit)

    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

  13. [13] BMW UK Technical data — The all-new BMW 1 Series (118i, M135i xDrive)

    BMW (UK) Ltd. · EN · United Kingdom · Basic data summary (engine description B38A15M1 / B48A20T1); Motor: “Engine oil (exchange quantity)” · Accessed 08/10/2026

  14. [14] BMW 1er (F40) Betriebsanleitung, Sach-Nr. 01405A54108 – II/22 (online copy)

    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

  15. [15] BMW Technical training — B46 Engine (with the B38 three-cylinder)

    BMW of North America — Technical training (archive.org copy) · EN · USA · Information status June 2014 · §1 (B38/B46, “Bx8”) · §2.2.7 Chain drive, Bx8 engines (pp. 57–58) · Accessed 08/10/2026

  16. [16] 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

  17. [17] BMW 2er Active Tourer (F45) Betriebsanleitung, Sach-Nr. 01402978274 – II/17 (online copy)

    BMW AG (online copy: Kfz-Handbuch.de) · DE · Germany · p. 96 (Servicebedarf), pp. 214–215 (Kraftstoffqualität), pp. 231–234 (Motoröl), pp. 235–236 (Kühlmittel), pp. 237–238 (Condition Based Service, Service Historie) · Accessed 08/10/2026

  18. [18] BMW 2er Active Tourer (F45) Betriebsanleitung, Sach-Nr. 01402666468 – VI/19 (online copy)

    BMW AG (online copy: Kfz-Handbuch.de) · DE · Germany · pp. 140–141 (Servicebedarf), pp. 270–273 (Kraftstoff, AdBlue), pp. 295–298 (Motoröl), pp. 299–300 (Kühlmittel), pp. 301–302 (Condition Based Service, Service Historie) · Accessed 08/10/2026

  19. [19] BMW parts catalogue (ETK) — BMW 2 Series F45 Active Tourer, Europe: model and engine list

    bmwfans.info (copy of the BMW ETK parts catalogue) · EN · Europe · Model, Engine: 214d/216d B37, 216i/218i B38, 218d/220d (and xDrive) B47, 220i/225i/225i xDrive B48, 225xe B38X · Accessed 08/10/2026

  20. [20] 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

  21. [21] BMW UK Technical data — 2 Series Convertible LCI (F23LCI)

    BMW Group UK · EN · United Kingdom · Effective production week 44/2017 · engine type (B38B15M0, B48B20M0, B48B20O0, B58B30M0, B47D20U0, B47D20O0, B47D20T0), gearbox, “Engine oil (filling quantity)” · Accessed 08/10/2026

  22. [22] 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

  23. [23] 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

  24. [24] BMW 2er Active Tourer (U06) Betriebsanleitung, Sach-Nr. 01405B553E0 – X/24 (online copy)

    BMW AG (online copy: Kfz-Handbuch.de) · DE · Germany · pp. 170–171 (Service), 334 (Einfahren), 350–351 (Rekuperation, Segeln), 389–394 (Kraftstoff, AdBlue), 394–399 (Motoröl, Kühlmittel), 401 (CBS, Service Historie), 405–408 (Batterie, Mild-Hybrid), 412–413 (Starthilfe), 425–431 (Technische Daten) · Accessed 08/10/2026

  25. [25] BMW — élargissement de la campagne EGR, 23/10/2018

    BMW Group · EN · Europe / marchés ACEA · Page 1 : fuite glycol, suie, risque thermique ; périodes variables selon modèle, contrôle et remplacement des composants concernés. · Accessed 08/10/2026

  26. [26] ADAC Autokatalog — BMW 520d Steptronic (07/20 – 05/23)

    ADAC · DE · Germany · Technische Daten: Motorart, Motorcode, Leistung, Drehmoment, Schadstoffklasse, Abgasreinigung, Aufladung, Nockenwellensteuerung, Hubraum · Accessed 08/10/2026

  27. [27] ADAC Autokatalog — BMW 220d Coupé Advantage Steptronic (01/22 – 06/22)

    ADAC · DE · Germany · Technische Daten: Motorart, Motorcode, Leistung, Drehmoment, Schadstoffklasse, Abgasreinigung, Aufladung, Nockenwellensteuerung, Hubraum · Accessed 08/10/2026

  28. [28] 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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