DPF and Turbo failure on my Focus

The engine failure light came on in my 2008 Focus 1.6 TDCI and i discovered it was the additive for the DPF filter, which needed to be topped up. But I chose to have it removed. The night before it was...

Is it legal to take out a DPF?

Is it legal to have a DPF removed? Are there any likely negative consequences with the EMS? Vehicle is a VW Jetta.

Can I remove my DPF?

As the owner of a 2011 520D BMW touring automatic I only do about 5000 miles a year mainly City driving. I see advertisements for removal of DPF, is this a solution to avoid impending major problems?

How can I cheaply replace or repair the DPF filter in my Mazda 6?

I own a 2008 Mazda 6 2.0-litre diesel with 77,000 miles. A little while ago a DPF warning light came on and the car went into 'limp' mode. I spoke with the Mazda dealer who suggested the DPF filter required...

Why did a Volvo salesman say that a software upgrade would reduce DPF problems with the V50 R-Design?

I have been approached by a local Volvo dealer who is aware that I am in the market for a new car and of my concerns regarding the DPF. They have a special offer at present: V50 R-Design D2 (1.6) with...