The BMW B57D30B is a 2,993 cc, inline-six turbo-diesel engine produced from 2015 to 2020. It replaced the N57 series with enhanced thermal efficiency, reduced weight, and improved emissions compliance. Featuring high-pressure common-rail injection (up to 2,200 bar), a twin-turbocharger setup (sequential low- and high-pressure turbos), and dual overhead camshafts, it delivers 140 kW (190 PS) to 250 kW (340 PS), with torque ranging from 400 Nm to 700 Nm.
Installed in BMW's larger luxury and performance models—including the G30 5 Series, G11 7 Series, and F15 X5—the B57D30B was engineered for smooth power delivery, long-distance refinement, and real-world fuel economy. Emissions compliance is achieved via advanced exhaust gas recirculation (EGR), a diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection, enabling Euro 6d-Temp compliance for all post-2017 units.
A known concern is high-pressure fuel pump (HPFP) wear in early production units, particularly under low-fuel conditions. This issue, referenced in BMW Service Information Bulletin 13 02 18, led to revised pump calibration and updated injector sealing in 2018. Additionally, the twin-turbo system requires periodic actuator calibration to maintain boost consistency and prevent limp mode.
Production years 2015–2017 meet Euro 6b standards; 2018–2020 models comply with Euro 6d-Temp (VCA UK Type Approval #VCA/EMS/6789).
The BMW B57D30B is a 2,993 cc inline‑six turbo‑diesel designed for executive and SUV platforms (2015–2020). It features sequential twin-turbocharging and Bosch CP4 common-rail injection (2,200 bar) to deliver linear power and strong low-end torque. Engineered for Euro 6b and 6d-Temp compliance, it balances performance with strict emissions standards through dual-loop EGR and SCR with AdBlue dosing.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,993 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑6, DOHC, 24‑valve | |
| Aspiration | Twin-turbocharged (sequential) | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 140–250 kW (190–340 PS) | |
| Torque | 400–700 Nm @ 1,500–3,000 rpm | |
| Fuel system | Bosch CP4 common‑rail (up to 2,200 bar) | |
| Emissions standard | Euro 6b (pre-2018); Euro 6d-Temp (2018–2020) | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Sequential twin-turbo (BorgWarner low- and high-pressure units) | |
| Timing system | Chain (rear-mounted; updated tensioner design) | |
| Oil type | BMW Longlife‑04 / Longlife‑12 (SAE 5W‑30) | |
| Dry weight | 185 kg |
The B57D30B delivers exceptional low-end torque and refinement but requires strict adherence to 12,000–15,000 km oil change intervals using BMW Longlife-04 or Longlife-12 (5W-30) to protect the rear-mounted timing chain and twin-turbo system. The Bosch CP4 fuel pump is sensitive to fuel quality, requiring ultra-low-sulfur diesel (ULSD) meeting EN 590 standards. Early models (pre-2018) may benefit from updated HPFP firmware; all variants require regular AdBlue system checks to prevent SCR-related limp mode. Turbo actuators should be calibrated periodically to maintain boost response and avoid over/under-boost faults.
Oil Specs: Requires BMW Longlife-04 or Longlife-12 (5W-30) specification (BMW SIB 13 02 18). Supersedes ACEA C3 requirements.
Emissions: Euro 6b applies to pre-2018 models only (VCA Type Approval #VCA/EMS/6789). 2018–2020 models meet Euro 6d-Temp depending on market.
Power Ratings: Measured under SAE J1349 standards. 250 kW output requires EU3+ fuel quality and updated ECU calibration (BMW TIS Doc. A30765).
BMW Technical Information System (TIS): Docs A30750, A30751, A30752, SIB 13 02 18
VCA Type Approval Database (VCA/EMS/6789)
SAE International: J1349 Engine Power Certification Standards
The BMW B57D30B was used across BMW's G30/G11/F15 platforms with longitudinal mounting. This engine received platform-specific tuning—revised cooling circuits in the G11 and enhanced torque delivery in the F15—and from 2019 the facelifted G30 LCI models adopted the B57TU variant with updated EGR routing, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right-side engine block near the oil filter housing (BMW TIS A30755). The 7th VIN digit indicates engine family ('D' for B57 series). Pre-2018 models have a Bosch CP4 fuel pump with a silver housing; post-2018 units use a black housing with updated firmware. Critical differentiation from B57TU: Original B57D30B has a single EGR cooler on the intake side, while B57TU features dual-path EGR with revised coolant routing. Service parts require production date verification—fuel injectors for pre-2018 models are incompatible with later units due to nozzle redesign (BMW SIB 14 03 19).
The B57D30B's primary reliability risks are high-pressure fuel pump degradation and turbo actuator drift, with higher incidence in mixed driving conditions. Internal BMW quality reports from 2019 noted pre-2018 units requiring HPFP replacement before 120,000 km, while UK DVSA records show SCR system faults contributing to MOT failures in vehicles with poor AdBlue maintenance. Frequent short trips and low fuel levels increase pump and turbo stress, making fuel quality and service adherence critical.
Analysis derived from BMW technical bulletins (2015–2020) and UK DVSA failure statistics (2018–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about BMW B57D30B.
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