2012 Mazda3 Skyactiv 2.0L vin 7, bought brand new December 2012. Started running a little rough around 75k miles and dropping mileage. Changed plugs to NGK Iridiums around 80k miles. Mechanic told me that one plug was so shot, it was barely even sparking. Engine seemed to even out for a bit, then started running rough again. A whopping two miles per gallon better than a hugely spacious and cushy Honda Odyssey -- 24 mpg in mixed driving. But when equipped with the same engine and transmission as the Mazda5, the 2013 2012, the number of models that fully incorporate Skyactiv Technology has increased. Starting in 2019, Mazda has been introducing new-generation technologies, including the Skyactiv-X engine, set to become the world’s first commercial gasoline engine to use compression ignition.*1 This unique new-generation engine combines the advantages The Mazda dealer that I bought/service the car from sells about 50-60 CX5's a month (pre-COVID while they still had cars to sell) and I am the first CX5 (first 2.5L N/A SKYACTIV G for that matter) with an oil leak at the dealership. Based on this rudimentary analysis, I would say it's not a widespread issue across the 2.5L N/A motors w/ CD. Wheelbase 2830mm (sedan), 2750mm (wagon). Rear cargo volume with all seats in use, 438 litres (sedan), 451 litres (wagon). How much: Prices range from $45,495 for a 2.0-litre petrol GLX wagon to 115 posts · Joined 2016. #6 · Nov 28, 2017. My engine is very noisy/rattly for the first 20 seconds on startup, but then it quiets down quite a bit. It’s still a little noisy but Ive had lots of direct injection cars so am used to it. That said the cold start rattle has always bothered me. Oil leak on top of engine bay (Skyactiv 2.5) Garage: 2014 Mazda 6 Grand Touring (6AT) & 2018 Mazda 3 Grand Touring (6MT) California. Save Share. Reply Quote Like. R. VC9A207.