I wonder if The Doctor might offer me a few words of advice on whether, in view of all the problems with diesel particulate filters (DPFs), I should look at having mine on my 2013 Focus Zetec 1.6 TDCi taken off, as I believe is still possible? Will it save me enough fuel to cover the cost, over a reasonable period?
A few words, you request. Here they are: “Don’t do it!” As you should know, this practice is illegal. In essence, your car will simply fail its first MOT test in 2016, if you still have the car then, and if the MOT station does its job properly. You would be unlikely to save enough fuel to cover the cost of removal, and it would certainly cost you more than it would in fuel and time to take your car out for the regular exercise that would ensure that your DPF was working efficiently and regenerating as required. The likelihood of you actually being stopped on the road, your vehicle inspected, and you being prosecuted for having an illegal car is actually pretty infinitesimal, but that’s because, as yet, there’s simply no real inclination or manpower to enforce the law properly in the matter of vehicle emissions controls. We have little or no idea (because there’s so little monitoring) of how much urban pollution is being generated by cars and other vehicles (HGV in particular) that have been illegally modified and which, as a result, pour out grossly excessive and illegal emissions of particulates and oxides of nitrogen. The annual testing and policing of HGV emissions is still pathetically inadequate and does little or nothing to ensure that emissions control equipment has not been meddled with or removed. Maybe the London air quality panic will change this.