What size turbo is the LS500?
The LS500 uses a twin-turbocharged 3.5-liter V6 with two turbochargers; Lexus does not publish the exact turbocharger wheel sizes for these units.
In practice, this engine delivers about 416 horsepower and 442 lb-ft of torque, paired with a 10‑speed automatic transmission. The turbo arrangement is designed to provide strong low- and mid-range torque for a luxury sedan, rather than a single oversized unit. Official details on turbine/compressor dimensions are not disclosed by Lexus.
Turbo configuration and design
The following points summarize what is publicly known about the LS500’s turbo system and its design goals.
- Twin-turbocharged 3.5-liter V6 engine
- Two turbochargers with a twin-scroll design to optimize spool and efficiency
- Intercooling between the turbos and intake to reduce charge temperature
- Direct fuel injection and advanced engine management to maximize power and response
- Exact turbocharger sizes (compressor/turbine wheel diameters) are not disclosed by Lexus
With these core features, the LS500 aims to provide robust torque delivery across rev ranges appropriate for a luxury sedan, while maintaining refinement and smoothness in everyday driving.
Engine specifications and performance data
The following publicly disclosed specifications help frame how the turbo system translates into performance.
- Displacement: 3.5 liters
- Configuration: Twin-turbocharged V6
- Power output: ≈416 horsepower
- Torque: ≈442 lb-ft
- Transmission: 10-speed automatic
- Drivetrain options: Rear-wheel drive standard, all-wheel drive optional
While the turbocharger wheel sizes remain undisclosed, these numbers reflect the LS500's intended balance of performance and luxury, delivering strong mid-range torque for confident highway and city driving.
Note on disclosures
Automakers frequently keep specific turbocharger dimensions (turbine/compressor wheel sizes) private. The figures Lexus does publish focus on displacement, configuration, power, torque, and drivetrain—not on turbo dimensions. For most readers and owners, those published metrics are the most useful benchmarks of the LS500’s turbocharged performance.
Summary: The LS500 employs a twin-turbo 3.5-liter V6 with two turbochargers, but Lexus has not released the exact turbocharger sizing. The engine’s published figures—416 hp, 442 lb-ft of torque, and a 10-speed automatic—define its performance envelope rather than the physical turbo dimensions.
