A machine which measures exhaust fumes for Diesel motors is attached to an exhaust pipe of a Volkswagen Golf 2.0 TDI. Photo: EPA

Widening scandal over vehicle emissions threatens climate accord

Governments are counting on regulatory action and voluntary pledges by companies to meet climate targets. The scandals and shortcomings involving carmakers show the pitfalls of the strategy.

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A machine which measures exhaust fumes for Diesel motors is attached to an exhaust pipe of a Volkswagen Golf 2.0 TDI. Photo: EPA
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