2018 Buick LaCrosse
US · Midsize Cars
The 2018 Buick LaCrosse is listed in the US market. Every figure below carries the source it came from, and anything our sources do not publish is left out rather than estimated.
- Engine
- Varies by configuration: 3.6L 6-cylinder (SIDI), 2.5L 4-cylinder (SIDI; eAssist)
- Transmission
- Automatic
- Drivetrain
- Varies by configuration: FWD, AWD
- Fuel
- Varies by configuration: Gasoline, Hybrid
- Economy
- 23 mpg (10.2 L/100 km) to 29 mpg (8.1 L/100 km) combined
Key Figures
Engine
| Specification | Value | Source |
|---|---|---|
| Engine | Varies by configuration: 3.6L 6-cylinder (SIDI), 2.5L 4-cylinder (SIDI; eAssist) | |
| Displacement | 2.5 L to 3.6 L | |
| Cylinders | 4 to 6 | |
| Fuel type | Varies by configuration: Gasoline, Hybrid | EPA fueleconomy.gov |
Transmission and drivetrain
| Specification | Value | Source |
|---|---|---|
| Transmission | Automatic | EPA fueleconomy.gov |
| Gears | 6 to 9 | |
| Drivetrain | Varies by configuration: FWD, AWD |
Fuel economy and range
| Specification | Value | Source |
|---|---|---|
| Combined | 23 mpg (10.2 L/100 km) to 29 mpg (8.1 L/100 km) | EPA fueleconomy.gov |
| City | 20 mpg (11.8 L/100 km) to 25 mpg (9.4 L/100 km) | |
| Highway | 29 mpg (8.1 L/100 km) to 35 mpg (6.7 L/100 km) |
Our sources do not publish these for this vehicle: Aspiration, Power, Torque, Electric range, Battery capacity. We leave them out instead of estimating.
Trims and configurations
3 configurations listed by our sources. Engines, drivetrains and fuel economy can differ between them.
Recalls
NHTSA lists 3 recall campaigns for this model year. Last checked November 10, 2026.
20V668000: POWER TRAIN:AUTOMATIC TRANSMISSION
General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain, 2018 Chevrolet Malibu, 2019-2020 Buick Encore, Buick Enclave, Cadillac XT4, Chevrolet Blazer and GMC Acadia, and 2020 Cadillac XT6 vehicles. The start/stop accumulator endcap may have missing bolts.
Remedy: GM will notify owners, and dealers will inspect the start-stop transmission accumulator and replace it if any bolts are missing, free of charge. The recall began December 15, 2020. Owners may contact GMC customer service at…
Reported October 29, 2020. View on NHTSA
18V576000: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER
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.
Remedy: 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,…
Reported August 30, 2018. View on NHTSA
18V358000: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
General Motors LLC (GM) is recalling certain 2015-2018 GMC Canyon, 2016-2017 Buick Envision, 2016-2018 Chevrolet Colorado and Malibu, 2017-2018 GMC Acadia, 2018 Buick LaCrosse, Cadillac ATS, Chevrolet Equinox, and GMC Terrain vehicles. The high pressure fuel pump may detach from its mounting flange, possibly resulting in the pump damaging the high pressure fuel line.
Remedy: GM will notify owners, and dealers will replace the high pressure fuel pump, and high pressure fuel pipe, free of charge. The recall began July 2, 2018. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer…
Reported May 31, 2018. View on NHTSA
Data sources
- EPA fueleconomy.gov · retrieved November 5, 2026 · US Government public data
- NHTSA vPIC · retrieved October 12, 2026 · US Government public data
Source checked: November 5, 2026
Data verified: November 5, 2026
Specifications can vary by market, trim, configuration and production date. Confirm with the manufacturer before buying parts or making safety decisions. Report an error.
Related vehicles
- 2017 Buick LaCrosse
Gasoline
3.6L 6-cylinder (SIDI) · Varies by configuration: FWD, AWD
25 mpg (9.4 L/100 km) to 23 mpg (10.2 L/100 km) - 2019 Buick LaCrosse
Varies by configuration: Hybrid, Gasoline
Varies by configuration: 2.5L 4-cylinder (SIDI; Mild Hybrid; eAssist), 3.6L 6-cylinder (SIDI) · Varies by configuration: FWD, AWD
29 mpg (8.1 L/100 km) to 23 mpg (10.2 L/100 km)
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Frequently asked questions
What engine does the 2018 Buick LaCrosse have?
Varies by configuration: 3.6L 6-cylinder (SIDI), 2.5L 4-cylinder (SIDI; eAssist). Engines can differ by trim, so check the trim list below.
What is the fuel economy of the 2018 Buick LaCrosse?
Combined fuel economy is 23 mpg (10.2 L/100 km) to 29 mpg (8.1 L/100 km), as published by the source shown in the specification table.
Is the 2018 Buick LaCrosse front-wheel, rear-wheel or all-wheel drive?
Drivetrain: Varies by configuration: FWD, AWD.
Are there recalls for the 2018 Buick LaCrosse?
NHTSA lists 3 recall campaigns for this model year (last checked November 10, 2026). Details are in the Recalls section.