The BMW B57D30A is a 2,993 cc, inline-six turbo-diesel engine introduced in 2015 as part of BMW’s modular B-series engine family, replacing the N57. It features high-pressure common-rail direct injection (up to 2,500 bar), a sequential twin-turbo system (low- and high-pressure turbos), and dual overhead camshafts (DOHC) with variable valve timing (VVT). Producing 195–250 kW (265–340 PS) and 620–700 Nm of torque, it was engineered for strong refinement, responsive power delivery, and improved fuel efficiency over its predecessor.
Fitted to BMW’s larger luxury and performance models—including the G30 5 Series, G11 7 Series, and G05 X5—the B57D30A delivers effortless cruising and robust towing capability. Emissions compliance is achieved via a comprehensive aftertreatment system: exhaust gas recirculation (EGR), diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection, enabling Euro 6d-TEMP and Euro 6d compliance depending on model year and market.
One documented concern involves the high-pressure fuel pump (HPFP) on early production units (2015–2017), which may experience premature wear under sustained high-load conditions. This issue, referenced in BMW Service Information Bulletin 13 02 18, is linked to contamination or inadequate lubrication. From 2018 onward, revised pump calibration, updated fuel system maintenance intervals, and enhanced ECU monitoring were implemented to improve long-term durability.
Production years 2015–2017 meet Euro 6c standards; 2018–2025 models comply with Euro 6d-TEMP and Euro 6d depending on market (VCA UK Type Approval #VCA/EMS/9012).
The BMW B57D30A is a 2,993 cc inline-six turbo-diesel engineered for BMW's executive and SUV platforms (2015–2025). It combines modular architecture with sequential twin-turbocharging and Bosch CRS 3-20 common-rail injection to deliver smooth, linear power and high torque from low RPM. Designed to meet Euro 6d standards, it balances performance with strict emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,993 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-6, DOHC, 24-valve | |
| Aspiration | Twin-turbocharged (sequential) | |
| Bore × stroke | 82.0 mm × 94.6 mm | |
| Power output | 195–250 kW (265–340 PS) | |
| Torque | 620–700 Nm @ 1,500–2,750 rpm | |
| Fuel system | Bosch CRS 3-20 common-rail (up to 2,500 bar) | |
| Emissions standard | Euro 6c (pre-2018); Euro 6d-TEMP / 6d (2018–2025) | |
| Compression ratio | 16.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Sequential twin-turbo (low- and high-pressure BorgWarner units) | |
| Timing system | Dual-row roller chain (front-mounted) | |
| Oil type | BMW Longlife-14 (SAE 0W-30) | |
| Dry weight | 225 kg |
The B57D30A delivers exceptional low-end torque and smooth power delivery, ideal for luxury and towing applications. However, it requires strict adherence to 15,000 km oil change intervals using BMW Longlife-14 (0W-30) oil to maintain timing chain and turbocharger longevity. The SCR/AdBlue system demands regular replenishment and is sensitive to low-quality diesel, risking regeneration faults. High-pressure fuel pump reliability depends on clean fuel and timely filter changes per BMW SIB 13 02 18. Cold-start idling should be minimized to reduce particulate accumulation. Post-2018 models feature improved ECU calibration and revised fuel pump firmware, enhancing overall durability under mixed driving conditions.
Oil Specs: Requires BMW Longlife-14 (0W-30) specification (BMW SIB 11 03 20). Supersedes ACEA C2/C3 and prior Longlife standards.
Emissions: Euro 6c applies to pre-2018 models (VCA Type Approval #VCA/EMS/9012). Euro 6d compliance confirmed for 2018–2025 units in UK and EU markets.
Power Ratings: Measured under SAE J1349 standards. 250 kW output requires EU5+ fuel quality and functional SCR system (BMW TIS Doc. B57-005).
BMW Technical Information System (TIS): Docs B57-001, B57-002, B57-004, SIB 13 02 18
VCA Type Approval Database (VCA/EMS/9012)
SAE International: J1349 Engine Power Certification Standards
The BMW B57D30A was used across BMW's G-series executive and SUV platforms with longitudinal mounting. This engine received platform-specific calibrations—torque tuning in the G30 and enhanced DPF regeneration logic in the G05 X5—and from 2018 the facelifted G12 7 Series adopted the B57TU variant with updated EGR routing, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block near the timing cover (BMW TIS B57-007). The 7th VIN digit indicates engine family ('B' for B-series diesel). Pre-2018 models have silver valve covers; post-2018 units use revised cam covers with updated sensor placement. Critical differentiation from N57: B57D30A features a front-mounted timing chain with dual-row roller design, while N57 uses a rear-mounted chain. Service parts require production date verification—DPF and ECU components for pre-2018 models are incompatible with B57TU variants due to SCR system revisions (BMW SIB 14 01 19).
The B57D30A's primary reliability risk is high-pressure fuel pump degradation in early builds, with elevated incidence in high-mileage or poorly maintained vehicles. Internal BMW quality reports from 2017 noted increased HPFP warranty claims in pre-2018 units, while UK DVSA data links SCR system faults to urban driving patterns with frequent short trips. Extended oil intervals and low-quality diesel exacerbate fuel system stress, making adherence to maintenance schedules and fuel quality critical.
Analysis derived from BMW technical bulletins (2015–2020) and UK DVSA failure statistics (2018–2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about BMW B57D30A.
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