Searching for a TOYOTA Vitz Transmission 1.3 L Petrol Automatic (1NR-FE, OEM Part 30400-52300) with precise specifications and verified OEM compatibility? You’re in the right place. This automatic transmission assembly is engineered to match the drivetrain dynamics, torque characteristics, and electronic control requirements of the Toyota Vitz equipped with the 1.3 L 1NR-FE petrol engine, delivering smooth gear transitions, confident acceleration, and dependable performance whether you’re navigating city streets, cruising on the highway, or enjoying everyday driving with comfort and control.

Built to integrate precisely with the 1.3 L 1NR-FE petrol engine and the Vitz’s drivetrain architecture, this automatic transmission supports optimized gear ratios, adaptive shift logic, and precise hydraulic and electronic control mapping to ensure consistent drivability, improved fuel efficiency, and long service life. The transmission control unit (TCU/ECU) communicates seamlessly with the engine management system, enabling accurate electronic coordination that enhances shift quality, throttle response, and overall vehicle responsiveness under varied driving conditions.

Owners commonly search for a replacement automatic transmission when experiencing symptoms such as delayed or rough gear changes, slipping under acceleration or load, unusual vibration or noise from the drivetrain, inconsistent throttle response, persistent transmission-related warning lights, or reduced overall drivability and fuel efficiency. Because modern automatic transmissions are precision-engineered systems designed to work with specific engine torque curves, hydraulic control strategies, and electronic communication protocols, confirming correct fitment and specifications before purchase is essential to ensure smooth operation and extended service life.

This automatic transmission assembly is ideal for buyers searching for a TOYOTA Vitz 1.3 L Petrol Automatic Transmission (1NR-FE, OEM 30400-52300) replacement, genuine OEM gearbox solution, or complete unit that restores smooth operation and dependable drivability in compatible Vitz models. Automatic transmission systems are carefully calibrated to work with engine output characteristics, torque converter engagement behavior, electronic shift scheduling, vehicle speed inputs, and load-based adaptive control strategies to maintain refined performance and drivetrain longevity.

Installing an incompatible or mismatched unit can lead to persistent diagnostic fault codes, rough or unpredictable shifting behavior, reduced fuel economy, overheating risk, erratic throttle response, and premature wear of internal transmission components — especially under sustained driving or higher-load conditions. Ensuring correct transmission match and specification helps prevent unnecessary complications and protects overall drivetrain reliability.

Before you buy, always verify the vehicle make, model, and generation as TOYOTA Vitz with 1.3 L 1NR-FE petrol engine, confirm the automatic transmission configuration, and match the exact OEM transmission model or part number 30400-52300. Proper verification ensures accurate electronic communication, correct hydraulic and control system mapping, and smooth integration with the vehicle’s drivetrain system — delivering dependable performance you can trust mile after mile.