Key Model: V35A-FTS
Technical Milestone
The V35A-FTS achieves outstanding efficiency and provides high-output performance but has lingering reliablity concerns.Â
POWER
RELIABILITY
9/10
COST
6.5
MODERATE
OVERALL
6.5/10
The V35A-FTS Powerplant
The V35A-FTS is Toyota’s cutting-edge 3.5-liter twin‑turbo V6 used in premium rear‑ and all‑wheel‑drive models like the Lexus LS500 and LS500h. It focuses on high torque, strong efficiency, and low emissions while replacing older naturally aspirated V8 engines in many flagship applications.
TECHNICAL DATA & ARCHITECTURE
Engine Specifications
Engine Code
V35A-FTS
Displacement
3,445 cc (3.5L)
Configuration
60° V6 Twin-Turbo
Valvetrain
DOHC 24V
Max Horsepower
Up to 415 hp @ 5,200 rpm
Max Torque
Up to 480 lb‑ft @ 2,000–3,600 rpm
Compression Ratio
10.5:1
Construction
Aluminum block and heads
V35A-FTS Performance Insights
A technical evaluation of the 3.5L twin‑turbo V6 and its typical transmission pairings in Lexus and Toyota applications.
Peak Power
UP TO 415 HP
The V35A‑FTS is usually paired with advanced multi‑gear automatics designed to handle high torque while keeping shifts smooth and efficient. In most Lexus LS and related models, it is matched to a 10‑speed Direct Shift automatic transmission that keeps the engine in its optimal power band. Some hybrid variants pair the V35A with an electronically controlled multi‑stage hybrid transmission that blends electric torque with the V6 for seamless acceleration.
Reliability Score
Lower (6.5/10)
Being a smaller displacement turbo comes with some inherent stresses, however due to the bottom end issues, we cannot give this engine a high rating. Time will tell if Toyota's opinion that the bottom end issues are indeed related to debris left in at the factory or a systemic issue with the design.Â
Overall Grade
C+
Impressive engineering, but reliability concerns with the bottom end significantly lower our score.Â
DURABILITY EVALUATION
How the V35A holds up over time
Common Issues
Impact & Notes
Bottom-End Bearing Wear
Can lead to compression loss and rough running if not addressed.
A well-known issue where the fifth cylinder can develop scoring, often linked to heat and lubrication conditions.
Severity: High
Tip: Monitor compression and listen for rough idle or misfire symptoms.
Carbon Buildup (D-4ST)
Rattling or crackling noise from the VVT gears, especially on cold starts.
Often related to wear in the VVT mechanism; usually more of a nuisance than an immediate failure point.
Severity: Medium
Tip: Use quality oil and follow regular change intervals to minimize wear.
Cooling System Stress
Carbon deposits on intake valves can reduce airflow and efficiency over time.
Most common on the direct-injection 3GR-FSE variant; periodic cleaning can help maintain performance.
Severity: Medium
Tip: Consider intake cleaning at higher mileage and use quality fuel.
Oil Consumption Monitoring
Mileage: High Mileage (>120k)
Typical for forced induction engines as they age. PCV system health is critical to prevent pressurized oil from entering intake pathways.
Severity: Low
Tip: Inspect PCV valve every 30k miles.
MAJOR RELIABILITY INCIDENT
Reliability & Bottom-End Analysis
The V35A-FTS reliability landscape has been significantly impacted by a major manufacturing defect involving the crankshaft assembly. Investigations revealed that during the engine machining process, metallic debris could remain localized within the internal channels. This contamination subsequently circulates through the lubrication system, leading to catastrophic damage of the crankshaft main bearings. Known outcomes include persistent engine knocking, rough idling, failure to restart, or complete engine seizure. Toyota has responded with a series of major recalls, often necessitating a complete long-block engine replacement for affected units. While manufacturing updates and an improved No. 1 main bearing design have been implemented to mitigate these issues, the initial 'bottom-end' vulnerability remains a critical consideration for early-production 3.5L Twin-Turbo platforms.