2018 Chevrolet Sonic Hatchback

City mpg:
Highway mpg:

Actual rating will vary with options, driving conditions, habits and vehicle condition.

2018 Chevrolet Sonic Hatchback Overview

The standard features of the Chevrolet Sonic LT Auto include ECOTEC 1.8L I-4 138hp 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.

2018 Chevrolet
Sonic Hatchback

Starting at: $16,995

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  • Air conditioning
  • Remote keyless entry
  • Illuminated entry
  • Tilt steering wheel
  • Telescoping steering wheel
  • Driver vanity mirror
  • Passenger vanity mirror
  • Emergency communication system
  • Front beverage holders
  • Rear beverage holders
  • Driver door bin
  • Passenger door bin
  • AM/FM radio
  • Steering wheel mounted audio controls
  • Speakers - 4
  • Turn-by-turn navigation directions - OnStar Turn-by-Turn Navigation
  • Wireless phone connectivity - Bluetooth
  • 1st row LCD monitors - 1
  • Primary LCD size - 7.0"
  • Basic warranty - 36 months/36,000miles
  • Powertrain warranty - 60 months/60,000miles
  • Corrosion perforation warranty - 72 months/100,000miles
  • Roadside assistance coverage - 60 months/60,000miles
  • Maintenance warranty - 24 months/24,000miles
  • Max seating capacity - 5
  • Front seats - bucket
  • Rear seats - bench
  • Split folding rear seat
  • Sport steering wheel
  • Engine displacement - 1.8 L
  • Engine horsepower - 138hp @ 6,300RPM
  • Engine torque - 125 lb.-ft. @ 3,800RPM
  • Engine bore x stroke - 80.5mm x 88.2mm (3.17" x 3.47")
  • Compression ratio - 10.50 to 1
  • Exterior length - 4,059mm (159.8")
  • Exterior body width - 1,735mm (68.3")
  • Exterior height - 1,516mm (59.7")
  • Wheelbase - 2,525mm (99.4")
  • Turning radius - 5.3m (17.3')
  • Front legroom - 1,062mm (41.8")
  • Rear legroom - 879mm (34.6")
  • Front headroom - 983mm (38.7")
  • Rear headroom - 968mm (38.1")
  • Front hiproom - 1,306mm (51.4")
  • Rear hiproom - 1,311mm (51.6")
  • Front shoulder room - 1,356mm (53.4")
  • Rear shoulder room - 1,346mm (53.0")
  • Passenger volume - 2,566L (90.6 cu.ft.)
  • Interior cargo volume - 538 L (19 cu.ft.)
  • Interior maximum cargo volume - 1,351 L (48 cu.ft.)
  • Rear cargo - liftgate
  • Spoiler
  • Door mirrors - body-color
  • Bumpers - body-color
  • Engine liters - 1.8
  • Cylinder configuration - I-4
  • Horsepower - 138hp @ 6,300RPM
  • Torque - 125 lb.-ft. @ 3,800RPM
  • Number of valves - 16
  • Variable valve control
  • Sequential multi-point fuel injection
  • Engine location - front
  • Recommended fuel - Regular Unleaded
  • Transmission - 6 speed automatic
  • Manual-shift auto
  • Drive type - front-wheel
  • Fuel economy combined - 28mpg
  • Fuel tank capacity - 12.2gal.
  • Fuel economy city - 25mpg
  • Fuel economy highway - 34mpg
  • ABS brakes
  • Brake assist
  • Dual front impact airbags
  • Dual front side impact airbags
  • Overhead airbag
  • Knee airbag
  • Rear side impact airbag
  • Occupant sensing airbag
  • Panic alarm
  • Perimeter/approach lights
  • Ignition disable
  • Security system
  • Electronic stability
  • Traction control
  • Front wheel independent suspension
  • Front anti-roll bar
  • Power steering
  • Front tires - 195/65HR15.0
  • Rear tires - 195/65HR15.0
  • Wheel size - 15"
  • Fully automatic headlights
  • Delay-off headlights
  • Variably intermittent wipers
  • Rear window wiper
  • Rear window defroster
  • Front reading lights
  • Display - digital/analog
  • Tachometer
  • Outside temperature display
  • Low tire pressure warning
  • Trip computer
  • Exterior parking camera rear


  MSRP Engine Transmission City/Hwy mpg
LT Auto w/1FL 2018 Chevrolet Sonic Hatchback LT Auto w/1FL Search New $16,995   138-hp 1.8L 4-cyl  6-spd auto  25 / 34  
LT Manual 2018 Chevrolet Sonic Hatchback LT Manual Search New $17,820   138-hp 1.8L 4-cyl  5-spd man.  26 / 35  
LT Auto w/1SD 2018 Chevrolet Sonic Hatchback LT Auto w/1SD Search New $19,220   138-hp 1.8L 4-cyl  6-spd auto  25 / 34  
Premier Manual 2018 Chevrolet Sonic Hatchback Premier Manual Search New $19,820   138-hp 1.4L 4-cyl  6-spd man.  28 / 37  
Premier Auto 2018 Chevrolet Sonic Hatchback Premier Auto Search New $21,320   138-hp 1.4L 4-cyl  6-spd auto  27 / 35  


Driving Impression

New Car Test Drive

Engine behavior varies considerably. The base engine feels weak, loud and harsh, in stark contrast to the smooth, sporty nature of the turbo four. Clearly, the turbo is a better choice, even offering more satisfying gas mileage.

Turbo-power Sonics are fun to drive, especially with the 6-speed manual gearbox. They handle nicely and feel admirably composed – as solid and sturdy as a bigger car. Chevrolet’s responsive electric power steering provides good feel and helpful weighting. Unlike some rivals, too, the ride is well-controlled rather than coarse and overly active.

Top fuel-economy ratings stem from the 1.4-liter turbo with the 6-speed manual gearbox, EPA-rated at 28/37 mpg City/Highway, or 32 mpg Combined. An automatic transmission drops that rating to 27/35 mpg City/Highway, or 30 mpg Combined.

With a 5-speed manual gearbox, the 1.8-liter engine is EPA-rated at 26/35 mpg City/Highway, or 29 mpg Combined. The 6-speed automatic reduces that estimate to 25/34/28 mpg. Fuel-economy estimates are identical for the hatchback and sedan.

Walk Around

New Car Test Drive

Overall, the Sonic design has aged reasonably well, helped by a modernized front end for the 2017 model year, echoing appearance of recent Chevrolets. The two-element grille includes a large lower intake, with scoop-like openings for available foglamps. Projector-beam headlights are complemented by LED daytime running lights.

The five-door hatchback looks more settled than the sedan, though the blocky trunk is a bit large, lacking in elegance. Considering its seven-year history, the comparatively simple, basic shape of the hatchback isn’t obsolete.

Interior Overview

New Car Test Drive

Front seats are comfortable, but even two passengers in the rear can expect a tight experience. Taller adults are likely to be short on headroom, as well as leg space.

Early Sonics conveyed an econocar aura, but the current cabin is significantly more stylish. During recent years, quite a few subcompact cars have grown bigger, but Chevrolet hasn’t enlarged the Sonic.

Mounted at the center of the straightforward instrument panel is a large speedometer, matched by a slightly smaller tachometer. The infotainment touchscreen sits above big, intuitive rotary knobs that make climate adjustments.

Seat fabrics and abundant black plastic trim, among other interior elements, are appropriate for the subcompact segment. All told, the Sonic comes across as higher in quality than some Asian rivals. Each Sonic also is quiet on the road.

Cargo space is generous with either body style. Sedan trunks hold 14.9 cubic feet, with low liftover height. Hatchbacks promise 19 cubic-foot capacity with the rear seat up, growing to 42.7 cubic feet with the seat folded. A hidden bin is located below the cargo deck.

The hatchback’s load floor is a bit higher than in some competitors, but the Sonic’s relatively upright profile improves its ability to hold tall or long items. Rear seats in each body style flip forward.


New Car Test Drive

Despite its age, the Sonic remains a good choice in the subcompact category, ranking above the pack in design and fuel economy, as well as in safety. Even the modestly equipped Sonic LS isn’t grimly austere. Not many new subcompacts have been emerging lately, but the Sonic is likely to carry on for a while yet. It’s even more affordable than in the past, because of incentives available on such less-popular small cars.

Driving impressions by The Car Connection. James M. Flammang contributed to this report.

Model Lineup

New Car Test Drive

Sonic LS 4-Door Sedan ($15,295) comes with the 1.8-liter engine, 5-speed manual transmission, rearview camera, steering-wheel controls, keyless entry, air conditioning, Bluetooth, a USB port, LED daytime running lights, 15-inch steel wheels, and OnStar connectivity. A 6-speed automatic transmission ($1,200) is optional. (Prices are MSRP and do not include $875 destination charge.)

Sonic LT 4-Door Sedan ($17,695) offer a choice of 1.4-liter turbo or 1.8-liter engine and matching manual shift, plus deluxe cloth seat trim, power windows and mirrors, cruise control, 15-inch alloy wheels, six-speaker audio, two USB ports, and chrome beltline moldings. Sonic LT 5-Door Hatchback ($17,795) is equipped similarly but with hatchback body. Automatic transmission ($700) is optional.

Sonic Premier Sedan ($19,795) and Hatchback ($19,795) come with the turbocharged 1.4-liter engine, adding heated power front seats, 17-inch alloy wheels, foglamps, a leather-wrapped steering wheel, and enhanced digital instruments. Automatic ($700) is optional.

The RS Package includes a sport body kit.

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