Toyota should have spent Tuesday celebrating another year as the world’s top-selling automaker with 11.2 million vehicles delivered in 2023.
Instead, Toyota Chair Akio Toyoda had to apologize for another scandal over regulatory cheating at an affiliate.
Toyota temporarily halted shipments of Hilux trucks and Land Cruiser SUVs outfitted with diesel engines after investigators discovered that the affiliate producing the engines may have rigged testing for the motors to produce smoother power and torque curves.
The affiliate, Toyota Industries Corporation, or TICO, admitted in March 2023 that employees had rigged testing of diesel engines used in certain industrial equipment to meet Japanese emissions standards. Toyota commissioned an investigation, and that review revealed the irregularities in testing for the diesel passenger vehicles.
In a TICO report here, and a Toyota statement here, the companies said performance testing of the diesel engines used in ten vehicles sold in Japan, Europe, the Middle East and Southeast Asia was done using engine control units programmed with different software than that used in models delivered to customers. The companies said the software used for testing produced smoother, more consistent results.
Toyota said the temporary stop-shipping order for vehicles with TICO diesels hit six assembly lines. The company is already dealing with the fallout from revelations about cheating on safety tests at its Daihatsu mini-car affiliate. Daihatsu halted production last year through this month. In 2022, Toyota affiliate Hino was found to be falsifying data for engine emissions and performance tests.
The test-fudging at Toyota’s affiliates is not at the level of Volkswagen’s Dieselgate emissions cheating scandal. But echoes of Dieselgate and its profound impact on the auto industry – the scandal was a spur to the global EV race – sound in Toyota’s statement about the TICO revelations.
“We recognize the gravity of the fact that the repeated certification irregularities at TICO, following those at Daihatsu, have shaken the very foundations of the company as an automobile manufacturer,” Toyota said.