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, an…
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 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.
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.
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The B58 B30 A is highly reliable, especially post-2017 models with the revised high-pressure fuel pump. Early engines (2015–2016) had a higher rate of HPFP failure. When maintained properly with timely oil changes using BMW Longlife-01 (5W-30) oil and regular coolant service, these engines can achieve high mileage with minimal major repairs and are considered one of BMW's most robust modern engines.
The most common issues are high-pressure fuel pump (HPFP) failure on pre-2017 units, water pump impeller degradation, and intake valve carbon buildup. Valvetronic system faults are less common but can occur with poor maintenance. These issues are documented in BMW service bulletins and are largely preventable with proper maintenance, use of correct oil, and regular highway driving to clear deposits.
This 3.0L petrol was used in the BMW 3 Series (F30: 340i, 2015–2019), 5 Series (G30: 540i, 2017–2020), X3 M40i (G01, 2018–2020), and Z4 (G29: sDrive30i, 2019–2020). All applications meet Euro 6 emissions standards and feature longitudinal engine mounting.
Yes, the B58 B30 A responds exceptionally well to ECU remapping. Stage 1 tunes typically achieve 400–430 PS safely, as the stock turbo and internals handle increased boost. Further gains require supporting modifications like intercoolers, fuel system upgrades, and exhausts. Tuning should be performed by specialists familiar with BMW's Valvetronic and turbo systems to maintain reliability.
Moderate for a performance inline-six. In a BMW 340i (F30), real-world consumption averages 9.0–11.0 L/100km (25–31 mpg UK) on mixed driving. Highway efficiency can reach ~7.5 L/100km (~38 mpg UK). Actual economy depends heavily on driving style, but it offers a good balance of power and efficiency for its class.
Yes. The B58 series is an interference engine. If the timing chain fails or jumps, piston-to-valve contact will occur, resulting in severe internal engine damage. The front-mounted dual-row chain is robust, but any signs of rattle or oil starvation must be investigated immediately to prevent catastrophic failure.
BMW specifies 5W-30 synthetic oil meeting BMW Longlife-01 (or newer) specification. Oil must be changed every 12,000–15,000 km to ensure proper lubrication of the timing chain, Valvetronic system, and turbocharger, and to prevent sludge and carbon buildup.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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