The base LS sedan offers 15-inch steel wheels, automatic headlights, LED daytime running lights, manual mirrors, power locks, remote locking/unlocking, a rearview camera, manual windows, air-conditioning, cloth upholstery, a height-adjustable driver seat, 60/40-split-folding rear seatbacks, a tilt-and-telescoping steering wheel, a driver information screen, Bluetooth phone and audio connectivity, a 7-inch touchscreen interface, Android Auto and Apple CarPlay functionality, OnStar telematics (includes 4G LTE Wi-Fi hot-spot capability) and a four-speaker sound system with a USB port and an auxiliary audio jack.
The LT includes all of the above, plus alloy wheels, chrome exterior accents, heated power mirrors, upgraded cloth upholstery, cruise control, power windows, front and rear floor mats, remote ignition (automatic transmission only), a six-speaker sound system, satellite radio and a second USB port. The turbocharged 1.4-liter engine is standard on models with the manual transmission and optional with the automatic.
You can get an optional Convenience package for the LT that adds keyless entry and ignition, a leather-wrapped and heated steering wheel, a six-way power-adjustable driver seat, heated front seats and an upgraded driver information center.
Moving up to the Premier gets you the turbocharged engine, 17-inch alloy wheels, the contents of the Convenience package and leatherette (premium vinyl) upholstery.
The RS package is available on LT and Premier models (it is standard on the Premier with the manual transmission). For LT models, it includes 16-inch alloy wheels, a sport body kit, a rear spoiler, foglights, glossy black interior accents, a leather-wrapped sport steering wheel and upgraded floor mats. The Premier version or the RS doesn't have the heated steering wheel but adds black-painted 17-inch wheels, a sport-tuned suspension and simulated suede seat inserts.
A sunroof is optional for the LT and Premier, as is a Driver Confidence package that adds lane departure warning, forward collision alert and rear parking sensors.
The hatchback is equipped very similarly to its sedan counterpart. The most notable difference is that the features included in the sedan's RS package are standard here.
The standard engine on 2017 Chevy Sonic LS and LT models is a 1.8-liter four-cylinder that produces 138 horsepower and 125 pound-feet of torque. A five-speed manual transmission with a hill-hold feature is standard, and a six-speed automatic is available as an option.
Optional on the LT and standard on the Premier is a turbocharged 1.4-liter four-cylinder. Although its 138-hp output mirrors the base engine, it feels more potent thanks to its 148 lb-ft of torque. A six-speed manual transmission is standard, and a six-speed automatic is optional.
Although EPA-estimated fuel economy was not available at the time of publication, we don't expect the numbers to change much from last year. The EPA rated the 2016 Sonic with the 1.8-liter engine and manual transmission at 30 mpg combined (26 mpg city/35 mpg highway), while the automatic rang in at 28 mpg combined (24 city /35 highway). The turbocharged 1.4-liter fared slightly better, with 33 mpg combined (29 city/40 highway) for the manual and 31 mpg combined (27 city/37 highway) with the automatic.
In Edmunds performance testing, a turbocharged Sonic hatchback with the manual transmission accelerated from zero to 60 in 8.4 seconds, quick for this segment.
