TOKYO: Toyota Gazoo Racing (TGR) has unveiled a partially upgraded GR Corolla, and sales will start in Japan on Nov 3.
TGR said that by leveraging lessons learned from competing in Japan's Super Taikyu Series, the car's fundamental performance has been enhanced.
The body structure has been reinforced to endure vertical and lateral g-forces that are more intense than those typically generated at circuits in Japan.
To maintain stable engine output even during prolonged full-throttle driving, a cool air duct has been added to reduce the intake-air temperature during high-load driving.
The JBL Premium Sound System (factory-installed option) has been improved by equipping the car with an Active Sound Control system and installing a subwoofer in the luggage compartment.
Also, the supply system for the Japanese-market model has been revised to enable delivery to as many customers as possible - in view of the fact that the model has been only available through purchasing lotteries since its launch in 2022.
Also, for current owners, plans are afoot for a software-inclusive upgrade programme.
The upgrade programme, which will apply to the 2023 GR Corolla, will result in a 30Nm boost in maximum engine torque, raising torque from 370Nm to 400Nm and putting it on par with that of the evolved GR Corolla announced in 2024 and released in Japan in 2025.
The upgrade programme will also change the GR-FOUR control system, in which the hitherto 30:70 front/rear driving force distribution "REAR" mode will be replaced by a 50:50 front/rear driving force distribution "GRAVEL" mode, and the "TRACK" mode, which has been hitherto fixed at 50:50 front/rear driving force distribution, will become variable, enabling adjustments ranging from 60:40 front/rear to 30:70 front/rear.
Programme availability is scheduled to start in spring 2026.
Addition of a cool air duct (to the secondary air intake duct).
Subwoofer added to the JBL Premium Sound System.
Extension of structural adhesive application by 13.9 metres.
