Brussels Blog (Andrew Bounds): There has been much talk of the Franco-German motor that has traditionally propelled the European Union breaking down recently. So the cancellation of a meeting recently between the two countries to discuss proposals to cut pollution from cars led to plenty of puns. The German press said the process had stalled but the French government said that was overblown. Whatever happens, the two biggest carmaking countries in the EU will need to strike a deal over whose companies will have to make the biggest changes to ensure the EU meets - or at least comes close to - its climate change targets. The gas-guzzling, supercharged German machines have a head start. Angela Merkel's government has made clear that the Continent's biggest producer cannot accept European Commission plans for swingeing fines from 2012 for manufacturers that do not hit targets. Brussels' draft directive calls for a 25 per cent cut to an average emission of 120g of carbon per km by 2012. Savvy punters in Brussels expect the date to slip to 2015. The European Parliament, its members having one eye on the car plants in their constituencies, has already voted in favour of this. Acea, the carmakers' lobby group, argues that since it takes five years to design a car, companies need that time to come up with the necessary models. And six out of 10 cars on the road now will still be on the road in 2012. Arguments that Acea itself signed up voluntarily to such a target a decade ago are rebutted. Governments did not keep their side of the bargain through tax breaks, improving congestion and other measures to encourage consumers to embrace smaller cars, it says. France, like Italy, makes smaller cars so is closer to the 2012 target and has less to lose. However, it also inherits the presidency of the EU in July and is desperate for some big successes. They are not going to come without German co-operation. France wants an outline deal by the time EU environment ministers meet in June. Gloomy Commission officials and green groups expect a compromise that would put the EU even further off course from its target of cutting emissions by 20 per cent between 1990 and 2020. The meeting may have been cancelled but a Greenpeace protest went ahead. Transport is the only sector where emissions are growing and the European Environment Agency has already determined that the Commission's car package is not radical enough. If one sector does less, then others must do more. Allowing cars to burn more carbon will mean factories, power stations or households will have to burn even less. This race is nowhere near as predictable as a Grand Prix, however. As one of those behind the wheel observed, national trade-offs between issues can produce unpredictable results. This race will be won on the last bend.