Solving the diesel dilemma
IN SEPTEMBER 2015, the world of
diesel changed forever when news
broke that Volkswagen had been
covering up high emissions of nitrogen oxides from its diesel vehicles. Since then, diesel’s come under a lot of pressure, with groups calling for it to be taxed or banned.
But diesel isn’t necessarily the bad guy.
For some buyers, it still makes a lot of sense. But how do you know?
Firstly, diesel cars are good for highmileage drivers. Those doing more than 20,000 miles a year benefit from the increased fuel economy a diesel provides and over time they’ll save money.
Diesels are also efficient when they’re warm. However, they take a while to heat up, which means during the first 10 miles or so of any journey, they’ll be inefficient and polluting. That’s not good news if you undertake lots of journeys shorter than that, and it gets worse, too. Modern pollution control systems need the engines to be running at a certain rpm to function. This is fine on the motorway but if your