Mazda 6 diesel engine/system does not have DPF - good thing? | Ask Honest John

Mazda 6 diesel engine/system does not have DPF - good thing?

I have been advised that the Mazda 6 diesel engine with SkyActive technology does not have a DPF and therefore avoids associated problems of other diesel engines if used mostly on short mileage runs, with occasional long distance runs. Is this so? Told engine fully burns diesel fuel and no particulates get into exhaust. Any other/compensating problems with the Mazda diesel engine, and any other similar cars out there with no DPF?

Asked on 19 January 2016 by dmrh

Answered by Honest John

It does have a DPF but it also has a manifold in head engine which is more efficient and means the DPF can be more closely coupled to the cylinder head. What it avoids is the need to AdBlue. No diesel has avoided being fitted with a DPF since January 2011. The Renault/Nissan/Mercedes 1.6DTI employs similar technology and VAG moved to manifold in head for its current EA288 1.6 and 2.0 litre diesel engines, though the more powerful 2.0TDIs and those in larger bodied cars do need AdBlue systems.

Tags: diesel engines new cars

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