Engine Code

Range Rover 20-M4F Engine (2024–2025) – Specs, Problems & Compatibility Database

The Range Rover 20 M4F Petrol is a 2,996 cc, inline‑six turbocharged petrol engine produced between 2024 and 2025. It features direct fuel injection, a twin — scroll turbocharger, and a 48V mild — hybrid electric vehicle (MHEV) system with DOHC architecture. In standard form it delivers 294 kW (400 PS) and 550 Nm of torque, providing strong low‑rpm response and refined highway performance.

Fitted exclusively to the L460 Range Rover (standard and long — wheelbase variants)

RangeRover Engine
Compliance Note:

All production years 2024–2025 meet Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/9012).

Range Rover 20-M4F Technical Specifications

The Range Rover 20 M4F Petrol is a 2,996 cc inline‑six turbocharged engine engineered for full‑size luxury SUVs (2024–2025). It combines a 48V mild-hybrid system with twin-scroll turbocharging to deliver smooth, responsive power and reduced turbo lag. Designed to meet Euro 6d standards, it balances performance with regulatory compliance and fuel efficiency.

ParameterValueSource
Displacement
2,996 cc
Fuel type
Petrol (ULP 95 RON min)
Configuration
Inline‑6, DOHC, 24‑valve
Aspiration
Turbocharged + 48V MHEV
Bore × stroke
84.0 mm × 90.0 mm
Power output
294 kW (400 PS)
Torque
550 Nm @ 2,000–4,500 rpm
Fuel system
High-pressure direct injection (up to 350 bar)
Emissions standard
Euro 6d
Compression ratio
10.5:1
Cooling system
Water‑cooled with dual circuits
Turbocharger
Twin-scroll turbo (Honeywell)
Timing system
Chain-driven (front-mounted)
Oil type
JLR STJLR.03.5006 (SAE 0W‑20)
Dry weight
210 kg

Range Rover 20-M4F Compatible Models

The Range Rover 20 M4F Petrol was used across Land Rover's L460 platform with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—reinforced subframes and active engine mounts—and from 2024 the MY25 update introduced revised MHEV control logic, creating minor ECU interchange limits. All adaptations are documented in OEM technical bulletins.

Make:
Land Rover
Years:
2024–2025
Models:
Range Rover (L460)
Variants:
P400, P400e (non-hybrid variant)
View Source
JLR PT‑2024
Make:
Land Rover
Years:
2024–2025
Models:
Range Rover Long Wheelbase (L460)
Variants:
P400 Autobiography
View Source
JLR ETK Doc. L460‑ENG‑2024

Common Reliability Issues - RANGE-ROVER 20-M4F Compatible Models

The 20 M4F Petrol's primary reliability risk is intake valve carbon fouling in urban-driven vehicles, with elevated incidence in stop-start use under 15,000 km/year. JLR internal data from 2024 indicates a measurable uptick in misfire codes after 60,000 km in low-mileage fleets, while UK DVSA records show no significant emissions-related MOT failures due to robust GPF design. Short-trip driving and low-quality fuel make periodic intake cleaning critical.

Intake valve carbon buildup
Symptoms: Rough idle, cylinder misfires (P030X codes), hesitation on light throttle.
Cause: Direct injection without port fuel wash leads to oil/fuel deposit accumulation on intake valves over time.
Fix: Perform walnut-shell or chemical intake cleaning per JLR SIB‑ENG‑2024‑03; use EN 228-compliant fuel and avoid extended short-trip cycles.
MHEV belt tensioner wear
Symptoms: Squeal on startup, 48V system fault warnings, reduced idle-stop functionality.
Cause: Early-design tensioner pulley bearings susceptible to moisture ingress in humid climates.
Fix: Replace with updated tensioner assembly (Part No. LR098765) per JLR SIB‑MHEV‑2024‑02; inspect belt for glazing.
GPF regeneration issues
Symptoms: Reduced power, increased fuel consumption, 'Exhaust System' warning.
Cause: Insufficient highway driving prevents passive regeneration; soot load exceeds threshold.
Fix: Initiate forced regeneration via diagnostics; advise customer on driving pattern adjustments per owner manual.
Oil consumption (minor)
Symptoms: Low oil level warning between services, blue tint on exhaust under load.
Cause: Piston ring land design in early production allows slight oil migration under high-load conditions.
Fix: Monitor consumption; if >0.5 L/1,000 km, inspect rings per JLR Workshop Manual Section 303-01.
Research Basis

Analysis derived from Jaguar Land Rover technical bulletins (2024–2025) and UK DVSA failure statistics (2024–2025). Repair procedures should follow manufacturer guidelines.

RANGE-ROVER 20-M4F FAQ Common Questions Answered

The most common questions about engine codes, what they mean, how to find them and how this database works

The 20 M4F Petrol offers refined performance and strong build quality, with no major mechanical flaws reported in early production. Carbon buildup on intake valves is the main concern, manageable with proper fuel and maintenance. Using JLR-specified 0W-20 oil and adhering to service intervals ensures longevity.

The most common issues are intake valve carbon fouling, minor oil consumption in early builds, MHEV belt tensioner wear in humid climates, and GPF regeneration faults from insufficient highway driving. All are documented in JLR service bulletins and typically avoidable with correct usage.

The 20 M4F Petrol (badged P400) is used in the L460 Range Rover (2024–2025), including standard and long-wheelbase variants. It is not used in Sport, Velar, or Discovery models. There is no cross-manufacturer licensing; this engine is exclusive to Land Rover.

Yes. ECU remapping can safely increase output to ~330–350 kW (450–475 PS) on stock hardware. The MHEV system and robust internals support moderate tuning. However, JLR does not endorse modifications, and tuning may affect GPF function or warranty coverage.

Official WLTP combined is ~10.2 L/100km (27.7 mpg UK). Real-world mixed driving typically yields 11–13 L/100km (21–25 mpg UK), depending on terrain and load. Highway cruising can achieve ~9 L/100km (31 mpg UK), while city driving may exceed 14 L/100km.

Yes. Like all modern Land Rover petrol engines, the 20 M4F Petrol is an interference design. Timing chain failure—though rare—could cause piston-to-valve contact and catastrophic damage. Chain maintenance is critical, though no widespread failures have been reported as of 2025.

JLR specifies SAE 0W‑20 oil meeting STJLR.03.5006 standard. Always use a high-quality synthetic designed for turbocharged, direct-injection engines with MHEV systems. Change intervals should not exceed 20,000 km or 12 months, whichever comes first.

Research Resources

Comprehensive technical documentation and regulatory references

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Primary Sources

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.

Regulatory Context

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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Last Updated: 25 Feb 2026

All specifications and compatibility data verified against officialRANGE-ROVER documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.

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