DecodedCars2018 Chevrolet Impala
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2018 models.
- Class
- Large Cars
- Body styles
- 4dr Sedan 2.5l Ls/Lt/Ltz/2.4eco, 4dr Sedan 3.6l Lt/Ltz
- Engines
- 2.5L 4-cyl, 3.6L 6-cyl
- Transmission
- 6-speed automatic
- Drivetrain
- Front-Wheel Drive
- Seats
- 5
- Fuel
- Regular Gasoline, FFV
- MPG (best)
- 25 combined · 22 city / 30 hwy
- Length
- 201.2 in
- Curb weight
- 3,662–3,785 lb
- NHTSA rating
- ★★★★★
- Recalls
- 1 campaign
Pros & cons
What's good
- 5-star NHTSA safety ratingTop overall score in federal crash tests.
Watch out for
No weak spots against similar models in the data.
Calculated from EPA, NHTSA and vPIC data against 18 similar 2018 models — not a review. How we calculate this →
Overview
The 2018 Chevrolet Impala is a large car offered with 2 engines (2.5L 4-cyl and 3.6L 6-cyl) and front-wheel drive.
It measures about 201 inches long and 73 inches wide on a 112-inch wheelbase, with a curb weight of roughly 3,662 lb (4dr Sedan 2.5l Ls/Lt/Ltz/2.4eco).
EPA rates its most efficient version at 25 MPG combined (22 city / 30 highway), 8% better than the 2018 large car average of 23.1 MPG, for an estimated $2,700 a year in fuel.
In NHTSA crash testing it earned the top 5-star overall rating.
It has 1 recall campaign on file and owners have filed 59 complaints with NHTSA since 2015, most often about the unknown or other.
What changed for 2018
No changes to engines, powertrains, drivetrains, size, EPA ratings or NHTSA crash rating compared with the 2017 Impala — a carry-over year in the data.
Compared with 2017; trim, feature and price changes aren't covered. See the 2017 Impala →
Trims, performance & features
Trims
Safety & driver-assist features
Built in: Oshawa #1, Ontario · Detroit Hamtramck, Michigan
NHTSA vPIC, as reported by the manufacturer for 5 2018 Impala configurations; may not list every trim. How we calculate this →
Dimensions & weight
| Body | Length | Width | Height | Wheelbase | Track F / R | Curb weight | Weight F/R |
|---|---|---|---|---|---|---|---|
| 4dr Sedan 2.5l Ls/Lt/Ltz/2.4eco | 201.2 in | 72.8 in | 59.1 in | 111.8 in | 61.8 / 63 in | 3,662 lb | 59/41 |
| 4dr Sedan 3.6l Lt/Ltz | 201.2 in | 72.8 in | 59.1 in | 111.8 in | 61.8 / 63 in | 3,785 lb | 59/41 |
Transport Canada CVS (Open Government Licence – Canada), Canadian-market figures.
Will it fit your garage? Check with your measurements →Engines, MPG & running costs
| Version | Engine | Transmission | Drive | City / Hwy / Comb | vs. class | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|---|---|
| Impala | 2.5L 4-cyl | Automatic (S6) | Front-Wheel Drive | 22 / 30 / 25 | +8% | $2,700 | 360 |
| Impala FFV | 3.6L 6-cyl | Automatic (S6) | Front-Wheel Drive | 18 / 28 / 22 | -5% | $3,050 | 409 |
| Impala | 3.6L 6-cyl | Automatic (S6) | Front-Wheel Drive | 19 / 28 / 22 | -5% | $3,050 | 404 |
EPA estimates; "vs. class" is combined MPG against the 2018 EPA class average. How we calculate this →
Safety ratings & technology
| Version | Overall | Frontal | Driver / passenger | Side | Side pole | Rollover | Rollover risk |
|---|---|---|---|---|---|---|---|
| 2018 Chevrolet Impala 4 DR FWD | ★★★★★ | ★★★★★ | 5★ / 4★ | ★★★★★ | ★★★★★ | ★★★★★ | 12.1% |
Similar 2018 large cars
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2018 Chevrolet Impala (this car) | 25 MPG | ★★★★★ | 1 |
| 2018 Toyota Camry | 52 MPG | ★★★★★ | 8 |
| 2018 Dodge Charger | 23 MPG | ★★★★★ | 6 |
| 2018 Dodge Challenger | 23 MPG | ★★★★★ | 3 |
| 2018 Chevrolet Malibu | 46 MPG | ★★★★★ | 6 |
| 2018 Volkswagen Passat | 29 MPG | ★★★★★ | 4 |
| 2018 Buick Regal | 26 MPG | Not rated | 3 |
Recalls (1)
Service Brakes, Hydraulic › Foundation Components › Disc › Caliper · Aug 30, 2018
NHTSA campaign 18V576000 · 210,628 vehicles
- Problem
- General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Equinox, Impala, Cruze, Volt and Bolt EV vehicles, GMC Terrain vehicles, Buick Lacrosse and Regal vehicles, Cadillac XTS and XTS Professional vehicles and 2018 Chevrolet Malibu vehicles. The rear brake caliper pistons may have an insufficient coating causing gas pockets to form, potentially reducing rear brake performance.
- Risk
- A reduction of braking performance can increase the risk of a crash.
- Fix
- GM will notify owners, and dealers will bleed the vehicle's brake system, free of charge. The recall began October 11, 2018. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 18279.
Not every 2018 Chevrolet Impala is affected — only a VIN check confirms your car.
Owner-reported problems
Unverified owner reports; best-sellers collect more.
Used 2018 Chevrolet Impala buyer's checklist
- Run the VIN at nhtsa.gov/recalls. 1 recall this year — ask for proof of repairs.
- Electrical System — 11 owner reports. Test every window, lock, light, screen and USB port; check the battery age.
- Power Train — 11 owner reports. Test-drive through all gears, including reverse; note slipping, harsh or delayed shifts.
- Engine — 7 owner reports. Cold-start the engine, listen for knocking, and watch for warning lights or hesitation on acceleration.
- Mileage to watch. Owners typically reported problems around 40,400 miles; ask what was repaired near that point.
- Before you pay: service records, a history report and an independent inspection.
Generated by DecodedCars from NHTSA recalls and owner complaints for the 2018 Chevrolet Impala. Not a substitute for a professional inspection.
Other Impala years
Compare all years →| Year | MPG (best) | Length | Overall | Recalls | Complaints |
|---|---|---|---|---|---|
| 2020 Impala | 22 | 201.2 in | ★★★★★ | 0 | 15 |
| 2019 Impala | 25 | 201.2 in | ★★★★★ | 1 | 28 |
| 2017 Impala | 25 | 201.2 in | ★★★★★ | 0 | 117 |
| 2016 Impala | 25 | 201.2 in | Not rated | 0 | 111 |
| 2015 Impala | 25 | 201.2 in | Not rated | 3 | 300 |
| 2014 Impala | 28 | 201.2 in | Not rated | 12 | 570 |
| 2013 Impala | 22 | 200.4 in | Not rated | 1 | 232 |
| 2012 Impala | 22 | 200.4 in | Not rated | 3 | 175 |
| 2011 Impala | 23 | 200.4 in | Not rated | 2 | 252 |
| 2010 Impala | 22 | 200.4 in | Not rated | 4 | 242 |
| 2009 Impala | 23 | 200.4 in | Not rated | 4 | 432 |
| 2008 Impala | 22 | 200.4 in | Not rated | 2 | 278 |
Sources: EPA, NHTSA, Transport Canada, Wikimedia Commons. Not affiliated with NHTSA, the EPA or Chevrolet. How we calculate this →