The Range Rover C 27 A1 is a 2,996 cc, inline‑six turbocharged petrol engine produced between 2023 and 2025. It features dual overhead camshafts (DOHC), variable valve timing (VVT), and direct fuel injection with a 48V mild-hybrid system. In standard form it delivered 294 kW (400 PS) and 550 Nm of torque, providing smooth acceleration and refined efficiency.
Fitted to the L460 Range Rover—including SE, HSE, and Autobiography trims—the C 27 A1 was engineered for modern luxury SUV performance with reduced emissions and improved fuel economy. Emissions compliance was achieved through precise combustion control, a gasoline particulate filter (GPF), and active cylinder deactivation, meeting Euro 6d standards across all production years.
One documented concern is premature failure of the 48V belt-integrated starter generator (BISG) motor, which can cause loss of hybrid assist and fault codes. This issue is referenced in Land Rover Service Bulletin SIB 09 23 24. The root cause is linked to thermal stress on the motor windings under repeated high-load regeneration cycles. From mid-2024, revised BISG units with improved thermal shielding were introduced.
All production years 2023–2025 meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/11502).
The Range Rover C 27 A1 is a 2,996 cc inline‑six turbocharged petrol engine engineered for next-generation luxury SUVs (2023–2025). It combines DOHC architecture with a twin-scroll turbocharger, 48V mild-hybrid assist, and direct injection to deliver seamless power and improved efficiency. Designed to meet Euro 6d emissions standards, it integrates a gasoline particulate filter (GPF) and cylinder deactivation technology.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,996 cc | |
| Fuel type | Petrol (ULP 95 RON min) | |
| Configuration | Inline‑6, DOHC, 24‑valve | |
| Aspiration | Turbocharged (twin‑scroll) | |
| Bore × stroke | 89.0 mm × 80.0 mm | |
| Power output | 294 kW (400 PS) @ 5,500–6,500 rpm | |
| Torque | 550 Nm @ 2,000–5,000 rpm | |
| Fuel system | Direct injection (Bosch HDEV6) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Twin‑scroll (Honeywell) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Land Rover STJLR.03.5027 (SAE 5W‑30) | |
| Dry weight | 185 kg |
The inline‑six turbo delivers smooth, linear power with mild-hybrid torque-fill, ideal for relaxed cruising and responsive overtaking. It requires strict adherence to 15,000 km oil change intervals using Land Rover–approved 5W‑30 to protect the turbocharger and timing chain. The 48V BISG system is sensitive to thermal cycling—repeated short trips or aggressive regenerative braking can accelerate motor degradation. Pre‑mid‑2024 engines should be monitored for BISG faults per SIB 09 23 24. Direct injection demands high‑quality fuel (95 RON minimum) to prevent GPF clogging and injector coking. Cylinder deactivation reduces fuel use but increases carbon buildup on deactivated valves.
Oil Specs: Requires Land Rover STJLR.03.5027 (5W‑30) specification (Land Rover SIB 09 23 24). Equivalent to ACEA C5 with OEM-specific additives.
Emissions: Euro 6d certification applies to all 2023–2025 models (VCA Type Approval #VCA/EMS/11502). Includes mandatory GPF and real-driving emissions (RDE) compliance.
Power Ratings: Measured under ISO 1585 standards. Full 400 PS output assumes 95 RON fuel and functional 48V system (Land Rover TIS Doc. I6‑2996‑T2).
Land Rover Technical Information System (TIS): Docs I6‑2996‑T2, SIB 09 23 24, SIB 06 12 23
VCA Type Approval Database (VCA/EMS/11502)
ISO 1585: Road vehicles — Engine test code
The Range Rover C 27 A1 was used exclusively in Land Rover's L460 platform with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—reinforced subframes, 48V electrical architecture, and active engine mounts in the L460—and from mid-2024 the updated L460 retained the same engine but with revised BISG units, creating partial interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crank pulley (Land Rover TIS I6‑2996‑T2). The 7th VIN digit indicates engine family ('C' for C 27 A1). Pre-mid-2024 models use silver BISG housings with older motor windings; post-mid-2024 units feature black housings and updated internals. Critical differentiation from diesel variants: C 27 A1 has a single exhaust manifold, GPF, and 48V battery under the boot floor. Service parts for the BISG require production date verification—units before 06/2024 are incompatible with later revisions due to thermal shielding redesign (Land Rover SIB 09 23 24).
The C 27 A1's primary reliability risk is 48V BISG motor failure on pre-mid-2024 builds, with elevated incidence in urban stop-start driving and frequent regenerative braking. Land Rover internal quality data from 2024 indicated a measurable rate of BISG-related faults before 50,000 km in early units, while UK DVSA records show minimal emissions-related MOT failures due to robust GPF design. Repeated high-load regeneration increases thermal stress on the motor, making driving pattern and software calibration critical.
Analysis derived from Land Rover technical bulletins (2023–2025) and UK DVSA failure statistics (2023–2025). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RANGE-ROVER C-27-A1.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with RANGE-ROVER or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
RANGE-ROVER 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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialRANGE-ROVER documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
