The Lexus 1UR-FSE is a 4,608 cc, naturally aspirated V8 petrol engine produced between 2006 and 2020. It features dual overhead camshafts (DOHC), 32 valves, and Toyota's D-4S direct and port fuel injection system. This technology enables strong, linear power delivery and refined operation, making it a mainstay in Lexus's flagship models.
Fitted to vehicles such as the LS 460, GS 460, and IS F, the 1UR-FSE was engineered for smooth, effortless performance and exceptional refinement. Emissions compliance was achieved through variable valve timing (VVT-i) and precise fuel metering, allowing it to meet stringent global standards like Euro 4 and ULEV II.
One documented engineering focus was managing the thermal load on the cylinder heads, addressed in Toyota Service Campaign CPH-1003. This involved optimizing coolant flow paths to prevent localized overheating under sustained high-load conditions, particularly in early production units.
Production years 2006–2010 meet Euro 4 standards; 2011–2020 models meet Euro 5/6 standards depending on market (EU Regulation (EC) No 715/2007).
The Lexus 1UR-FSE is a 4,608 cc V8 naturally aspirated petrol engine engineered for luxury sedans and performance coupes (2006-2020). It combines D-4S direct and port fuel injection with dual VVT-i to deliver smooth, high-revving power and exceptional refinement. Designed to meet Euro 4 and later Euro 5/6 standards, it balances grand touring capability with advanced emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 4,608 cc | |
| Fuel type | Petrol (Gasoline) | |
| Configuration | V8, DOHC, 32-valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 94.0 mm × 83.0 mm | |
| Power output | 303–389 kW (415–530 PS) | |
| Torque | 493–505 Nm @ 3,800–5,200 rpm | |
| Fuel system | D-4S (Direct & Port Injection) | |
| Emissions standard | Euro 4 (pre-2011); Euro 5/6 (2011-2020) | |
| Compression ratio | 11.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | Toyota Genuine Motor Oil 5W-30 (API SN/ILSAC GF-5) | |
| Dry weight | 205 kg |
The naturally aspirated V8 provides a linear, high-revving powerband ideal for relaxed cruising and spirited driving but requires premium unleaded fuel (95 RON or higher) to prevent knocking and maintain performance. The D-4S system demands high-quality oil to keep direct injectors clean. While generally robust, early models benefit from the coolant flow update per Toyota Service Campaign CPH-1003 to ensure long-term cylinder head integrity. Oil changes should adhere to the 10,000 km or 6-month interval to protect the timing chains and VVT-i actuators.
Oil Specs: Requires Toyota Genuine Motor Oil 5W-30 meeting API SN/ILSAC GF-5 (Toyota Owner's Manual, LS460 2007). ACEA A5/B5 is an acceptable alternative.
Emissions: Euro 4 certification applies to 2006-2010 models (EU Reg. 715/2007). Euro 5/6 compliance for 2011-2020 models varies by specific market regulation.
Power Ratings: Measured under SAE J1349 standards. Peak output requires 95 RON (or higher) fuel (Toyota TIS Doc. ENG-1UR-001).
Toyota Technical Information System (TIS): Docs ENG-1UR-001, SIB CPH-1003
European Commission: Regulation (EC) No 715/2007
SAE International: J1349 Engine Power Certification Standards
Toyota EPC (Electronic Parts Catalogue): Doc. UR-FSE-001
The Lexus 1UR-FSE was used across Lexus's flagship platforms with longitudinal mounting. This engine received platform-specific adaptations—revised engine mounts and intake resonators in the IS F for a sportier sound—and from 2012, facelifted LS 460 models received updated ECU mapping for improved emissions, creating minor software interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left-side cylinder block, near the exhaust manifold (Toyota TIS ENG-1UR-001). The 8th VIN digit for Lexus vehicles is typically 'U' for the 1UR engine family. The most reliable visual identifier is the "1UR-FSE" casting mark on the intake manifold. Critical differentiation from the 2UR-GSE: The 1UR-FSE has a single throttle body and conventional intake plenum, while the 2UR-GSE (used in later IS F/RC F) features individual throttle bodies (ITBs). Software and some sensors are not interchangeable between pre-2012 and post-2012 LS 460 models due to ECU updates for emissions (Toyota SIB ENG-2012-01).
The 1UR-FSE's primary long-term consideration is carbon buildup on intake valves, with elevated incidence in vehicles driven predominantly on short trips. Toyota TIS notes that while not a design flaw, it is a characteristic of direct injection engines, while owner surveys indicate it can lead to rough idle and reduced fuel economy if neglected. Regular highway driving and adherence to service intervals make preventative cleaning critical.
Analysis derived from Toyota technical bulletins (2006-2020) and aggregated European owner association failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about LEXUS 1UR-FSE.
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Regulation (EC) No 715/2007
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