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We cover the Mazda3 across the BK, BL, BM/BN and BP generations. Engines include 2.0- and 2.3-liter MZR units, the Mazdaspeed3 2.3 turbo, 2.0- and 2.5-liter Skyactiv-G and the 2.5-liter turbo, with Skyactiv transmissions and i-Activ AWD.



Model year 2015 is part of the third-generation Mazda3 (BM/BN) (2014–2018). Most procedures are shared with the other years of this generation, but engines, options and wiring changed from year to year, so the manual is made for the 2015 model year.
Check the model year on your VIN: on a 2015 vehicle the 10th character of the 17-digit VIN is “F”. Vehicles built for North America always carry the model year in that position; on some European or Australian vehicles it may be left unused, so in that case go by the registration papers or the build plate.
At about 11 years old, a 2015 vehicle often needs work on the cooling system, timing components, suspension bushings, motor mounts and corroded electrical connectors, all jobs where the exact factory procedure and torque values save time.
Same generation: 2014 Mazda 3, 2016 Mazda 3, 2017 Mazda 3, 2018 Mazda 3.
All Mazda 3 model years: 2006 · 2007 · 2008 · 2009 · 2010 · 2011 · 2012 · 2013 · 2014 · 2015 · 2016 · 2017 · 2018 · 2019 · 2020 · 2021
Engine
SKYACTIV-G 2.0
SKYACTIV-G 2.5
Transmission
C66M-R
FW6A-EL
