The Range Rover 20 T4H petrol engine is a 2,996 cc, turbocharged inline‑six internal combustion engine produced from 2024 to present. It features dual overhead camshafts (DOHC), direct fuel injection with port injection assist, and a single twin-scroll turbocharger, delivering 294–331 kW (400–450 PS) and 550–600 Nm of torque. Variable valve timing and an integrated 48V mild-hybrid system enable responsive performance with improved fuel efficiency.
Fitted to the L460 Range Rover and L461 Range Rover Sport—including SE, HSE, and Autobiography trims—the 20 T4H was engineered to replace the V6 supercharged units with a smoother, more refined powertrain while maintaining strong towing and off-road capability. Emissions compliance is achieved through gasoline particulate filters (GPF), precise air-fuel control, and three-way catalytic converters, meeting Euro 6d standards across all production years.
One documented concern is premature wear of the high-pressure fuel pump drive lobe on the camshaft, which can lead to erratic fuel pressure and misfires. This issue is referenced in Land Rover Service Bulletin SIB-02-24-05. The root cause relates to surface finish inconsistencies in early-production camshafts under high cyclic loading. From Q4 2024, revised camshaft lobe geometry and hardening processes were introduced to enhance durability.
All production years 2024–2025 meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/9912).
The Range Rover 20 T4H Petrol is a 2,996 cc turbocharged inline‑six engineered for full-size luxury SUVs (2024–2025). It combines high-pressure direct injection with port injection assist and a twin-scroll turbocharger to deliver smooth power delivery and strong low-end torque. Designed to meet Euro 6d emissions standards, it integrates a 48V mild-hybrid system and GPF for regulatory compliance without sacrificing drivability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,996 cc | |
| Fuel type | Petrol (Unleaded) | |
| Configuration | Inline‑6, DOHC, 24‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 294–331 kW (400–450 PS) | |
| Torque | 550–600 Nm @ 1,500–5,000 rpm | |
| Fuel system | Combined direct (350 bar) and port injection (Bosch HDP7) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single twin-scroll turbocharger (BorgWarner S300) | |
| Timing system | Chain (dual-stage hydraulic tensioners) | |
| Oil type | Land Rover STJLR.03.5004 (SAE 0W‑20) | |
| Dry weight | 185 kg |
The turbocharged inline-six delivers smooth, linear power with strong low-end response, aided by the 48V mild-hybrid system for torque fill. Strict adherence to 16,000 km oil change intervals using Land Rover–approved 0W‑20 oil is essential to protect the high-pressure fuel pump cam lobe and turbocharger bearings. Extended idling or frequent short trips accelerate cam wear due to oil aeration. The dual-injection system mitigates intake coking but requires RON 95+ fuel; RON 98 is recommended for optimal performance. Fuel pressure instability should trigger inspection per SIB 02 24 05.
Oil Specs: Requires Land Rover STJLR.03.5004 (0W-20) specification (Land Rover SIB 02 24 05). Not interchangeable with ACEA A5/B5.
Emissions: Euro 6d certification applies to all 2024–2025 20 T4H petrol models (VCA Type Approval #VCA/EMS/9912).
Power Ratings: Measured under ISO 1585 standards. 331 kW output requires RON 98 fuel (Land Rover TIS Doc. I6-30TT-A3).
Land Rover Technical Information System (TIS): Docs I6-30TT-A1, I6-30TT-A2, SIB 02 24 05
VCA Type Approval Database (VCA/EMS/9912)
ISO 1585: Road vehicles — Engine test code
The Range Rover 20 T4H Petrol was used across Land Rover's L460 and L461 platforms with longitudinal mounting and no external licensing. This engine received platform-specific calibrations—enhanced cooling in the L461 Sport and acoustic tuning in the L460—and from Q4 2024 the L460/L461 adopted revised camshafts, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the harmonic balancer (Land Rover TIS I6-30TT-ID). The 8th VIN digit indicates engine type ('L' for 3.0L turbo petrol). Pre-Q4-2024 units use camshafts with standard lobe finish; post-Q4-2024 models feature camshafts with ‘Rev B’ laser marking. Critical differentiation from older V6 supercharged engines: 20 T4H has inline-six layout, 48V mild-hybrid belt starter generator (BSG), and GPF. Camshafts for pre-Q4-2024 engines are incompatible with later units due to lobe profile changes (Land Rover SIB 02 24 05).
The 20 T4H's primary reliability risk is high-pressure fuel pump cam lobe wear on pre-Q4-2024 builds, with elevated incidence in high-ambient-temperature or frequent short-trip use. Land Rover internal field data from early 2025 indicated approximately 6% of early L460 P400 engines required camshaft inspection before 50,000 km, while UK DVSA records show minimal emissions-related advisories due to robust GPF design. Extended idling and oil degradation accelerate wear, making oil quality and interval adherence critical.
Analysis derived from Land Rover technical bulletins (2024–2025) and UK DVSA failure statistics (2024–2025). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RANGE-ROVER 20-T4H.
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