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 BM…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The B57D30B offers improved efficiency and refinement over the N57, but early models (2015–2017) had reliability concerns, particularly high-pressure fuel pump wear. Later revisions (post-2018) improved pump durability and EGR management, so well-maintained examples can be robust. Regular servicing and using high-quality oil (5W-30 BMW Longlife-04/12) greatly enhance longevity.
The most documented issues are high-pressure fuel pump degradation, turbo actuator sticking, and EGR/intake carbon buildup. Other concerns include oil leaks from valve cover gaskets and occasional AdBlue system faults. These are well-documented in BMW service bulletins, particularly SIB 13 02 18 and SIB 14 03 19.
This 3.0L diesel was used in BMW's G30 5 Series (520d, 530d), G11 7 Series (730d, 740d), and F15/F16 X5/X6 (xDrive30d, xDrive40d). Most units from 2015–2017 meet Euro 6b, while 2018–2020 models comply with Euro 6d-Temp depending on market.
Yes. The B57 responds well to ECU remapping. Stage 1 tunes typically yield +30–50 kW safely, as stock internals handle increased torque. Aftermarket upgrades (larger intercooler, exhaust) allow higher gains. Tuning is popular on 530d and xDrive40d models, but must be paired with quality fuel and maintenance to avoid stressing the CP4 pump.
Excellent for its class. In a 530d (210 kW) from 2018–2020, real-world consumption averages ~6.8 L/100 km (city) and ~5.1 L/100 km (highway), or about 49 mpg UK combined. Expect 45–52 mpg (UK) on mixed driving for a well-maintained B57D30B.
Yes. The B57 series is an interference engine. If the timing chain fails or jumps, pistons can collide with open valves, resulting in severe internal damage. The rear-mounted chain system is robust, but regular inspection per BMW guidelines remains critical to prevent catastrophic failure.
BMW specifies a 5W-30 synthetic oil meeting BMW Longlife-04 or Longlife-12 specification. Use only high-quality oils designed for turbocharged diesels and change every 12,000–15,000 km to ensure proper lubrication of the fuel pump, turbo, and chain system, minimizing wear and soot accumulation.
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Regulation (EC) No 715/2007
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