The standard features of the Chevrolet Sonic LS include ECOTEC 1.4L I-4 138hp intercooled turbo engine, 6-speed automatic transmission with overdrive, 4-wheel anti-lock brakes (ABS), side seat mounted airbags, curtain 1st and 2nd row overhead airbags, rear side-impact airbag, driver and passenger knee airbag, airbag occupancy sensor, air conditioning, 15" steel wheels, ABS and driveline traction control, StabiliTrak electronic stability, power locks.