Used 2018 Chevrolet Sonic
- Price: $14,866
- Mileage: 126,791 miles
- Location: Hermitage, PA
- VIN: 1G1JF5SB1J4107804
Used 2018 Chevrolet Sonic for sale in Hermitage, PA — $14,866, 126,791 miles. The Sonic is a small, solid-feeling commuter car offered as a sedan or a practical hatchback. Buy Here Pay Here financing available. See photos and details, and get pre-approved online.
About the 2018 Chevrolet Sonic
2018 Chevrolet Sonic at a glance
The 2018 Sonic carries over the refreshed 2017 car with LS, LT and Premier trims, standard CarPlay and Android Auto, and a rear camera. It is the last year of the 138-hp 1.8L base engine; the 1.4L turbo (138 hp, 148 lb-ft) is the torquier choice. Confirm the engine by VIN, since the two are easy to confuse in listings.
- Engines: 1.8 liter I4 138 hp 125 lb ft; 1.4 liter turbo I4 138 hp 148 lb ft
- Transmissions: 5 speed manual 1.8 liter; 6 speed automatic; 6 speed manual 1.4 liter turbo
- Drivetrain: Front wheel drive
- Body style: 4 door sedan; 5 door hatchback
What changed:
- Largely carryover from 2017
- Last year of the 1.8 liter engine
What to inspect: Open recalls by VIN; Exact engine and transmission by VIN; Infotainment and smartphone integration; Coolant leaks at water outlet and water pump on 1.4 liter turbo; Pcv valve cover and intake vacuum leaks on 1.4 liter turbo; Oil change records; Automatic transmission shift quality; Manual clutch engagement if equipped; Suspension and tires; Brakes; Radio and infotainment operation; Maintenance history.
Known issues to check on a 2018 Chevrolet Sonic
- 1.4L Turbo Coolant Leaks (2012–2020)
The 1.4L turbo (optional 2012-2018, standard 2019-2020) is widely reported to develop coolant leaks as it ages, most often at the plastic water outlet or thermostat housing and the water pump. It is a known repair rather than a certain failure, but low coolant can lead to overheating.
What to do: Check the coolant level and look for crusty residue around the engine; documented repairs are a plus. - 1.4L Turbo PCV and Valve Cover Leaks (2012–2020)
On the 1.4L turbo, the crankcase ventilation (PCV) system is built into the valve cover. When it fails it can cause a whistle, rough idle, lean-running codes or oil leaks; the usual fix is a replacement valve cover.
What to do: On a turbo Sonic, listen for a whistle at idle and scan for codes before buying. - Automatic Shift Quality and Manual Clutch Check (2012–2020)
Sonics use a 6-speed automatic or a 5- or 6-speed manual depending on engine and year. High-mileage automatics can develop harsh or delayed shifts, and hard-driven manuals (common on the RS) can show clutch wear.
What to do: Road test cold and warm and ask about transmission or clutch service history. - Sonic Engine and Model Disambiguation (2012–2020)
Both Sonic engines are rated 138 hp, so listings often confuse them. The 1.8L (2012-2018) is non-turbo; the 1.4L turbo has more torque and was standard for 2019-2020. The Sonic replaced the Aveo; the smaller Spark is a separate model, and a newer crossover using the Sonic name in some markets is unrelated to this car.
What to do: Confirm the engine, transmission and body style before comparing prices.
Recall applicability varies by model year, production date, engine, transmission, equipment, and VIN. Check the VIN for current open recalls and completed remedies.
Chevrolet Sonic research: recalls, reliability and buyer's guide