How excessive tyre pressure can deflate share price

Instead of product information, Japanese visitors to the Mitsubishi eK Wagon mini website will now find a statement regarding the validity of information supplied to Japan’s Ministry of Land, Infrastructure, Transport and Tourism

A simple “trick” – or perhaps we should say “cheating” or “fraud” – has been common practice in the European automotive industry, to the displeasure of environmental organisations: Place a car with excessive tyre pressure on a dynamometer and – voilà – lower fuel consumption levels and emissions are recorded thanks to the ‘optimised’ rolling resistance. Mitsubishi has conceded carrying out this practice in Japan with test data submitted to the Ministry of Land, Infrastructure, Transport and Tourism. This time round it doesn’t affect, as in the case of Volkswagen and its ‘cheat’ software, millions of vehicles, rather ‘only’ 625,000 small cars, the majority of these off-take production for Nissan.

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