Honda will start supplying General Motors with low-emission engines and automatic transmissions next year, as the US company tries to minimise the cost of making cleaner cars, Bloomberg News reported. The news agency said the two companies first agreed on the co-operation in 2000. Citing Honda president Hiroyuki Yoshino, Bloomberg said Honda would supply about 50,000 V6 engines and transmissions to GM a year, less than the initially planned 90,000.