The BMW B58 B30 A is a 2,998 cc, inline-six turbocharged petrol engine introduced in 2015 as the successor to the acclaimed N55. Part of BMW's modular engine family, it features a single twin-scroll turbocharger, high-precision direct fuel injection, Double-VANOS variable cam timing, and Valvetronic throttle-less load control. It delivers 250 kW (340 PS) in standard tune with peak torque of 500 Nm.
Used in high-performance BMW models including the F80 M3, G01 X3 M40i, and G30 540i, the B58 B30 A combines smooth power delivery with strong low-end torque and improved efficiency over its predecessor. It meets Euro 6 standards and features a closed-deck cylinder block, forged crankshaft, and redesigned cooling system for enhanced durability and thermal management.
One documented concern is premature failure of the high-pressure fuel pump (HPFP) on certain early production units, particularly under sustained high-load operation. This was addressed in BMW Service Information Bulletin 13 01 19, which recommends inspection and replacement with a revised component. Water pump impeller degradation has also been reported, potentially leading to overheating if not addressed.
Production years 2015–2020 meet Euro 6 standards (VCA UK Type Approval #VCA/EMS/8821).
The BMW B58 B30 A is a 2,998 cc inline-six turbocharged petrol engine engineered for performance-oriented models (2015–2020). It combines direct fuel injection with a single twin-scroll turbocharger and Valvetronic technology to deliver linear power delivery and strong mid-range torque. Designed to meet Euro 6 standards, it represents a significant refinement over the N55 engine in terms of power, refinement, and reliability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,998 cc | |
| Fuel type | Petrol (Unleaded, 98 RON recommended) | |
| Configuration | Inline-6, DOHC, 24-valve, Valvetronic | |
| Aspiration | Turbocharged (twin-scroll) | |
| Bore × stroke | 82.0 mm × 94.6 mm | |
| Power output | 250 kW (340 PS) @ 5,500–6,500 rpm | |
| Torque | 500 Nm @ 1,500–4,500 rpm | |
| Fuel system | High Precision Injection (direct, up to 350 bar) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 10.2:1 | |
| Cooling system | Water-cooled, electric coolant pump | |
| Turbocharger | Single twin-scroll turbo (BorgWarner) | |
| Timing system | Chain (front-mounted, dual-row) | |
| Oil type | BMW Longlife-01 (SAE 5W-30) | |
| Dry weight | 183 kg |
The B58 B30 A offers exceptional power and refinement ideal for performance driving but requires adherence to 12,000–15,000 km oil change intervals using BMW Longlife-01 (5W-30) oil to ensure longevity of the timing chain and turbocharger. The Valvetronic system is sensitive to oil quality and carbon buildup; extended idling should be minimised. Owners should monitor for symptoms of high-pressure fuel pump (HPFP) failure—hesitation, misfires, or fuel pressure DTCs—especially on pre-2017 engines. Revised HPFP components per BMW SIB 13 01 19 mitigate this risk. The electric coolant pump is generally reliable, but impeller degradation can occur; coolant should be replaced per schedule. Regular use of quality fuel additives can help prevent injector coking.
Oil Specs: Requires BMW Longlife-01 (5W-30) specification (BMW SIB 13 01 19). Supersedes ACEA A3/B4 requirements.
Emissions: Euro 6 certification applies to all production years (VCA Type Approval #VCA/EMS/8821).
Power Ratings: Measured under SAE J1349 standards. Output consistent across fuel qualities meeting 95 RON minimum, with optimal performance at 98 RON (BMW TIS Doc. A27107).
BMW Technical Information System (TIS): Docs A27107, SIB 13 01 19
VCA Type Approval Database (VCA/EMS/8821)
SAE International: J1349 Engine Power Certification Standards
The BMW B58 B30 A was used across BMW's Fxx/Gxx platforms with longitudinal mounting. This engine received platform-specific adaptations—reinforced engine mounts in the G01 X3 M40i and revised exhaust routing in the F80 M3—and from 2017 received an updated high-pressure fuel pump (HPFP) to address reliability concerns, creating minor service part differences. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right side of the cylinder block, near the exhaust manifold (BMW TIS A27107). The 7th VIN digit indicates engine family ('B' for B-series). Pre-2017 models have a silver valve cover with a single electrical connector for the HPFP; post-2017 units feature a revised HPFP with updated connector and wiring. Critical differentiation from B48: B58 B30 A has six cylinders and a larger twin-scroll turbo; B48 has four cylinders. Service parts require production date verification—HPFP assemblies for pre-2017 engines are incompatible with post-revision units due to internal redesign (BMW SIB 13 01 19).
The B58 B30 A's primary reliability risk is high-pressure fuel pump (HPFP) failure on early builds, particularly in performance applications. Internal BMW data from 2017 reported a notable incidence of HPFP failures before 80,000 km in pre-2017 engines, while UK DVSA records show a low rate of emissions-related faults. Aggressive driving and poor maintenance increase stress on the fuel and valvetronic systems, making oil quality and service adherence critical.
Analysis derived from BMW technical bulletins (2015–2019) and UK DVSA failure statistics (2018–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about BMW B58B30A.
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