Mazda boosts petrol engine efficiency in fresh blow to diesel

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Mazda boosts petrol engine efficiency in fresh blow to diesel

Japanese carmaker says from 2019 it will sell cars fitted with engines that largely eliminate need for spark plugs, improving fuel consumption by 30 per cent

One of the world's largest automotive firms has hailed a technological breakthrough for the petrol engine, in an engineering twist for an industry racing to embrace the electric car. Japanese car manufacturer...

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