Anyone else think the new MOT rules are stupid? I mean I can't legally drive a car which has had its DPF removed, but i can legally drive a 40 year old car which probably puts out a lot more pollutants. Also, I think DPF is pointless, as to recharge it, you have to heat up the exhaust to burn off the soot. This means high revs, low gear, which is uneconomical driving, and is therefore bad for the environment, and your MPG. Particulates probably are really harmful, but then so is smoking, WIFI, microwaves, processed food, UV rays, pretty much everything.