Yes, Mazda 6 Sedan has ABS/EBD, which are: 2018 Mazda 6 Sedan 2.2 SkyActiv-D with G-Vectoring Control, 2018 Mazda 6 Sedan 2.5 SkyActiv-G with G-Vectoring Control, 2019 Mazda 6 Sedan 2.0, 2019 Mazda 6 Sedan 2.5, 2019 Mazda 6 Sedan 2.2 SkyActiv-D.
Yes, Mazda 6 Sedan is available in Hill Start Assist. The available Hill Start Assist variants are: 2018 Mazda 6 Sedan 2.2 SkyActiv-D with G-Vectoring Control, 2018 Mazda 6 Sedan 2.5 SkyActiv-G with G-Vectoring Control, 2019 Mazda 6 Sedan 2.0, 2019 Mazda 6 Sedan 2.5, 2019 Mazda 6 Sedan 2.2 SkyActiv-D.
Yes, Mazda 6 Sedan is available in Rear Air-con. The available Rear Air-con variants are: 2018 Mazda 6 Sedan 2.2 SkyActiv-D with G-Vectoring Control, 2018 Mazda 6 Sedan 2.5 SkyActiv-G with G-Vectoring Control, 2019 Mazda 6 Sedan 2.0, 2019 Mazda 6 Sedan 2.5, 2019 Mazda 6 Sedan 2.2 SkyActiv-D.