From the “no news is good news” department, Chevrolet makes almost no changes to its lineup of passenger cars. Only the enthusiast-oriented Camaro and Corvette see significant updates in the form of special editions and option packages that improve performance. Also, the Cruze Hatch is now available with a diesel engine.

Detailed changes for each 2018 Chevy car model are shown below, listed in alphabetical order.
2018 Chevrolet Bolt EV
- Sliding sun visors added for driver and front passenger
- Heated steering wheel standard with Premier trim, optional with LT trim
2018 Chevrolet Camaro
- New Hot Wheels Edition option package for 2LT and 2SS in both coupe and convertible body styles
- 1LE option package availability expanded to 2SS trim
- New 1LE Extreme Track option package offered for Camaro ZL1
2018 Chevrolet Corvette
- Five new wheel designs for Stingray, and larger standard wheels sized 19 ins. in front and 20 ins. in back
- Two new wheel designs for Z06
- Standard HD Radio and improved reversing camera display
- Magnetic Ride Control and ceramic brakes are stand-alone options, depending on specification
- Upgraded head-up display and Performance Data Recorder systems
- 2LT trim adds matching instrument panel color insert
- 3LT and 3LZ trim offered with new contrast stitching schemes
- Grand Sport and Z06 offered with Carbon 65 Edition option package
- Jet Black suede interior now includes carbon interior and steering wheel trim
- New hood stripe color: Satin Black (with Heritage package)
- New convertible top color: Spice Red
- New interior color: Spice Red (3LT and 3LZ), Gray (Z06)
- New exterior color: Ceramic Matrix Gray
2018 Chevrolet Cruze
- Diesel engine option added to hatchback body style
- New paint color: Satin Steel Gray
2018 Chevrolet Impala
- Keyless entry and push-button engine start is standard
- LT trim adds standard LED running lights and remote engine starting capability
- New LT options include a Sunroof and Spoiler package, heated steering wheel
- New paint colors: Cajun Red, Graphite, Nightfall Gray
2018 Chevrolet Malibu
- New paint color: Sandy Ridge
2018 Chevrolet Sonic
- Fun and Sun package now includes 1.4-liter turbocharged engine, 17-in. aluminum wheels, and power sunroof
- RS package features new black Chevy bowtie emblems
- New paint color: Ivy
2018 Chevrolet Volt
- LT trim features leatherette for steering wheel and shift knob
- New LT Driver Confidence package installs blind-spot monitoring system, rear cross-traffic alert, rear park-assist sensors
- New paint colors: Cajun Red, Satin Steel, Green Mist