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The Integration / Strategies: National strategies, Action plans, Capacity building, Implementation

The promotion of diesel-fuelled cars in Europe may not have had the beneficial environmental effects that were expected, research suggests. It has been assumed that they help reduce greenhouse gas (GHG) emissions from the transport sector, but studies show that their fuel efficiency is lower than previously believed, while their black carbon and nitrogen oxides emissions are higher. Consequent reduction in global warming effects from diesel cars may therefore be negligible, perhaps even negative

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