The thing is I cannot see how the vacuum pump could be the fault where i have no symptoms of a faulty of failing pump, and when read with an obd reader its specifically saying that oil pressure levels are out of specified range but when inspected by mazda they are constantly performing within the allowable ranges, I have since replaced the oil pressure switch also and still to no avail, it Mazda 6 - 2018 facelift diesel reliability. Hi, I am looking to be buying the new Mazda 6 2018 facelift model. I am unsure which engine to choose, but I have narrowed down my options to the 2.5 (194ps) petrol engine and the 2.2 (184ps) diesel engine. The Mazda CX-5 diesel does 0-100kph in a maximum of 9.5 seconds, which is fairly okay. If you want a faster equivalent of the car, go for the 2,500cc petrol-powered engine. It does 0-100kph in 8.8 2012 Mazda 6 2012 Touring Pricing and Specs: Sport: 2.5L, ULP, 6 SP AUTO : $10,340 – 14,190: 2012 Mazda 6 2012 Sport Pricing and Specs: Luxury Sports: 2.5L, ULP, 5 SP AUTO : $12,760 – 16,940: 2012 Mazda 6 2012 Luxury Sports Pricing and Specs: Diesel: 2.2L, Diesel, 6 SP MAN : $10,340 – 14,190: 2012 Mazda 6 2012 Diesel Pricing and Specs uv8Yt.