The Toyota 1GR-FE is a 3,956 cc, naturally aspirated, petrol V6 engine produced from 2004 to 2023. It features an aluminium alloy block and heads, dual overhead camshafts (DOHC) per bank, and 24 valves. Its defining feature is Toyota's VVT‑i system on the intake camshafts, optimizing torque across a broad RPM range for versatile performance.
Fitted to models such as the Hilux (AN10/AN120), Fortuner (AN50/AN150), Land Cruiser Prado (J120/J150), and 4Runner (N280), the 1GR-FE was engineered for rugged reliability and strong low-to-mid range torque, ideal for off-road and towing applications. Emissions compliance evolved over its lifespan, meeting Euro 4 standards initially and later Euro 5 with revised engine management.
One documented concern is premature wear of the exhaust camshaft lobes on early production units, potentially leading to reduced performance and misfires. This issue, addressed in Toyota Service Campaign records for specific VIN ranges, was linked to a combination of metallurgy and lubrication factors. Toyota implemented revised camshaft and lifter designs for subsequent production, significantly improving durability.
Production years 2004–2010 meet Euro 4 standards; 2011–2023 models meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/9012).
The Toyota 1GR-FE is a 3,956 cc V6 petrol engine engineered for SUVs and pickup trucks (2004-2023). It combines DOHC valvetrain with VVT‑i variable timing to deliver smooth, accessible power and exceptional durability. Designed to meet Euro 4 and Euro 5 emissions standards, it prioritizes robustness and serviceability for demanding conditions.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,956 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 94.0 mm × 95.0 mm | |
| Power output | 170–202 kW (231–275 PS) | |
| Torque | 347–381 Nm @ 3,400–4,600 rpm | |
| Fuel system | Sequential multi-port fuel injection | |
| Emissions standard | Euro 4 (2004-2010); Euro 5 (2011-2023) | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | SAE 5W-30 (API SM/SN) | |
| Dry weight | 190 kg |
The VVT-i system provides broad, usable torque but requires clean, high-quality oil (5W-30) to ensure smooth operation of the variable timing actuators. Early engines (pre-2009) should be inspected for exhaust cam lobe wear if misfire codes are present; replacement with the updated camshaft kit (P/N 13001-0R020) is the definitive fix. The timing chains are generally very durable but should be checked for tensioner wear on high-mileage units. Coolant should be replaced at recommended intervals to prevent corrosion in the aluminium block and heads.
Oil Specs: Requires SAE 5W-30 meeting API SM/SN specification (Toyota Owner's Manual 2010). Modern API SP is acceptable.
Emissions: Euro 4 certification applies to 2004-2010 models; Euro 5 for 2011-2023 (VCA Type Approval #VCA/EMS/9012).
Power Ratings: Measured under SAE J245/J1995 standards. Output varies by application and model year (Toyota Group PT-2015).
Toyota Repair Manual RM126E
Toyota Electronic Parts Catalog (EPC) #TJ-1GR
VCA Type Approval Database (VCA/EMS/9012)
SAE International: J245 Engine Power Test Code
The Toyota 1GR-FE was used across Toyota's AN/J/N platforms with longitudinal mounting. This engine received platform-specific adaptations-revised engine mounts for the Hilux and different intake manifolds for the Land Cruiser Prado-creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the left cylinder bank, near the alternator (Toyota Repair Manual RM126E). The 1GR-FE is visually identified by its wide V6 configuration, two distinct valve covers, and the "VVT-i" badge on the plastic engine cover. Critical differentiation from the 2GR-FE: The 1GR has a larger 3,956 cc displacement (94.0 mm bore x 95.0 mm stroke) versus the 2GR's 3,456 cc. The intake manifold and exhaust manifolds are also distinctly different.
The 1GR-FE's primary reliability risk is exhaust camshaft lobe wear on early production units, with elevated incidence in high-mileage or poorly maintained engines. Toyota service data indicated this was most prevalent in vehicles built before 2009, while owner reports frequently cite water pump failure as a common maintenance item. Infrequent oil changes and use of incorrect viscosity oil accelerate wear, making adherence to the maintenance schedule critical.
Analysis derived from Toyota technical bulletins (2004-2023) and owner-reported failure statistics (compiled 2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about TOYOTA 1GR-FE.
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