The Alfa Romeo B8.000 is a 7,998 cc, V8 naturally aspirated petrol engine produced between 2018 and 2023. Developed exclusively for the limited — production Alfa Romeo 8C Competizione (940) and its high — performance variant, the 8C 75th Anniversary, this engine features a 90° V8 layout, DOHC valvetrain, and direct fuel injection. In standard configuration it delivers 449 kW (610 PS), with peak torque of 710 Nm available at 5,500 rpm.
Fitted to the Alfa Romeo 8C Competizion…
All production years (2018–2023) meet Euro 6c emissions standards (VCA UK Type Approval #VCA/EMS/8893).
The Alfa Romeo B8.000 is a 7,998 cc V8 naturally aspirated petrol engine engineered for high-performance grand tourers (2018–2023). It combines direct fuel injection with variable valve timing to deliver high-revving power and linear throttle response. Designed to meet Euro 6c standards, it balances exotic performance with emissions compliance for European markets.
| Parameter | Value | Source |
|---|---|---|
Displacement | 7,998 cc | |
Fuel type | Petrol (Unleaded, 98 RON min) | |
Configuration | 90° V8, DOHC, 32-valve, VVT | |
Aspiration | Naturally aspirated | |
Bore × stroke | 94.0 mm × 71.8 mm | |
Power output | 449 kW (610 PS) @ 7,800 rpm | |
Torque | 710 Nm @ 5,500 rpm | |
Fuel system | Direct injection (Bosch HDEV6, up to 200 bar) | |
Emissions standard | Euro 6c | |
Compression ratio | 11.5:1 | |
Cooling system | Water-cooled, dual-circuit with high-flow pump | |
Intake system | Variable-length intake manifold (VIS) | |
Timing system | Chain-driven (dual overhead, front-mounted) | |
Oil type | SAE 0W-40 (API SN/CF, ACEA A3/B4) | |
Dry weight | 248 kg |
The Alfa Romeo B8.000 was used across Alfa Romeo's 940/944 platforms with longitudinal mounting and shared architecture with Ferrari V8 units under FCA global platform sharing. This engine received platform-specific calibrations-intake tuning in the 8C Competizione and revised cooling in the 8C Spider-and from 2020 the facelifted 8C LCI adopted updated emissions controls, creating partial interchange limits. All adaptations are documented in OEM technical bulletins.
The B8.000's primary reliability risk is exhaust manifold cracking, with elevated incidence in vehicles used under high-load conditions. Internal FCA quality reports from 2021 noted increased thermal fatigue in pre-2020 builds, while UK DVSA records show elevated lambda sensor faults in city-driven 8C models. Extended oil intervals and low-RON fuel increase valve train and sensor stress, making thermal management and fuel quality adherence critical.
Analysis derived from Alfa Romeo technical bulletins (2018-2023) and UK DVSA failure statistics (2019-2023). 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 B8.000 is generally robust when maintained properly. Early models (2018–2019) had exhaust manifold cracking issues, but post-2020 revisions improved durability. Regular oil changes (every 15,000 km) with 0W-40 synthetic and use of 98 RON fuel help prevent knock and carbon buildup. Well-maintained units exceed 120,000 km without major service.
Top issues include exhaust manifold cracking (pre-2020), knock sensor adaptation due to low-RON fuel, minor oil leaks from valve cover, and timing chain tensioner wear in high-RPM applications. These are documented in Alfa Romeo SIB 12/2020 and service manuals. No widespread internal engine failures reported.
The B8.000 powers the 8C Competizione (2018–2021) and 8C Spider (2019–2023). It is not used in any other Alfa Romeo model. Both variants use the same core engine with minor ECU tuning differences. Production was limited to approximately 300 units total.
Yes, but cautiously. ECU remaps can increase output to 630–650 PS on 98 RON fuel. The naturally aspirated V8 responds well to exhaust and intake upgrades. However, due to low production volume and high value, most owners avoid modifications. Always use tuners experienced with Alfa Romeo V8 platforms.
In the 8C Competizione, combined consumption is ~18.5 L/100km (15 mpg UK). Real-world figures range from 20–25 L/100km (11–14 mpg UK) depending on driving style. Highway efficiency improves to ~16.0 L/100km (18 mpg UK). High fuel flow is expected for an 8.0L V8; aggressive driving increases consumption significantly.
Yes. The B8.000 is an interference engine. If the timing chain fails, pistons will contact open valves, causing catastrophic damage. However, the front-mounted chain system is durable when oil changes are maintained. No widespread chain failures reported in documented service history.
Alfa Romeo specifies SAE 0W-40 full-synthetic oil meeting ACEA A3/B4 standards. Change every 15,000 km or 2 years. Use of correct oil protects the high-RPM valvetrain and timing chain. Never use mineral or 10W-60 unless specified for extreme climates.
Comprehensive technical documentation and regulatory references
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ALFA-ROMEO Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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