Kemna Automotive Group Compares 2017 Buick LACROSSE VS 2017 Chevrolet Impala In IA

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2017 Buick LACROSSE

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2017 Buick LACROSSE

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2017 Chevrolet Impala

Safety Comparison

In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the LaCrosse are reminded to check the back seat if they opened the rear door before starting out. The Impala doesn’t offer a back seat reminder.

The LaCrosse offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Impala doesn’t offer all-wheel drive.

The LaCrosse has standard Ultrasonic Park Assist to help warn the driver about vehicles, pedestrians or other obstacles behind or, optionally, in front of the vehicle. The Impala doesn’t offer a front parking aid.

Both the LaCrosse and the Impala have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, available crash mitigating brakes, lane departure warning systems, blind spot warning systems and rear cross-path warning.

For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, and with its optional front crash prevention system, the Insurance Institute for Highway Safety grants the LaCrosse the rating of “Top Pick” for 2017, a rating granted to only 113 vehicles tested by the IIHS. The Impala has not been fully tested, yet.

Warranty Comparison

The LaCrosse comes with a full 4 year/50,000 mile basic warranty, which covers the entire car and includes 24 hour roadside assistance. The Impala’s 3 year/36,000 mile basic warranty expires 1 year and 14,000 miles sooner.

Buick’s powertrain warranty covers the LaCrosse 1 year and 10,000 miles longer than Chevrolet covers the Impala. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the Impala ends after only 5 years or 60,000 miles.

The LaCrosse’s 6 year corrosion warranty has no mileage limitations, but the corrosion warranty on the Impala runs out after 100,000 miles.

Reliability Comparison

The battery on the LaCrosse is in the trunk, which protects it from hot underhood temperatures which can degrade battery life. By keeping the LaCrosse’s battery 20 to 30 degrees cooler, its life is increased by years. The Impala’s battery is in the hot engine compartment.

J.D. Power and Associates rated the LaCrosse second among large cars in their 2016 Initial Quality Study. The Impala was rated third.

From surveys of all its subscribers, Consumer Reports’ April 2017 Auto Issue reports that Buick vehicles are more reliable than Chevrolet vehicles. Consumer Reports ranks Buick third in reliability. Chevrolet is ranked 15th.

Engine Comparison

The LaCrosse’s 3.6 DOHC V6 produces 113 more horsepower (310 vs. 197) and 77 lbs.-ft. more torque (268 vs. 191) than the Impala’s standard 2.5 DOHC 4 cyl. The LaCrosse’s 3.6 DOHC V6 produces 5 more horsepower (310 vs. 305) and 4 lbs.-ft. more torque (268 vs. 264) than the Impala’s optional 3.6 DOHC V6.

As tested in Car and Driver the Buick LaCrosse is faster than the Chevrolet Impala:



Impala 4 cyl.

Impala V6

Zero to 60 MPH

5.9 sec

8.7 sec

6 sec

Zero to 100 MPH

14.5 sec

24.5 sec

15.5 sec

5 to 60 MPH Rolling Start

6.1 sec

9 sec

6.2 sec

Quarter Mile

14.5 sec

16.8 sec

14.8 sec

Speed in 1/4 Mile

100 MPH

85 MPH

97 MPH

Top Speed

149 MPH

132 MPH

149 MPH

Fuel Economy and Range Comparison

On the EPA test cycle the LaCrosse FWD gets better fuel mileage than the Impala V6 (21 city/31 hwy vs. 18 city/28 hwy). the LaCrosse FWD gets better fuel mileage than the Impala Flex-Fuel V6 (21 city/31 hwy vs. 19 city/28 hwy).

An engine control system that can shut down half of the engine’s cylinders helps improve the LaCrosse’s fuel efficiency. The Impala doesn’t offer a system that can shut down part of the engine.

The LaCrosse has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The Impala doesn’t offer a cap-less fueling system.

Brakes and Stopping Comparison

The LaCrosse stops shorter than the Impala:





70 to 0 MPH

173 feet

178 feet

Car and Driver

Suspension and Handling Comparison

The LaCrosse offers an available driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The Impala’s suspension doesn’t offer adjustable shock absorbers.

For a smoother ride and more stable handling, the LaCrosse’s wheelbase is 2.7 inches longer than on the Impala (114.4 inches vs. 111.7 inches).

For better handling and stability, the track (width between the wheels) on the LaCrosse is .7 inches wider in the front and 1.1 inches wider in the rear than on the Impala.

The LaCrosse Essence handles at .83 G’s, while the Impala LT pulls only .82 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the LaCrosse’s turning circle is .8 feet tighter than the Impala’s (38 feet vs. 38.8 feet).

Chassis Comparison

The LaCrosse is 3.8 inches shorter than the Impala, making the LaCrosse easier to handle, maneuver and park in tight spaces.

The front grille of the LaCrosse uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Impala doesn’t offer active grille shutters.

Passenger Space Comparison

The LaCrosse has .2 inches more rear legroom and 1 inch more rear hip room than the Impala.

Cargo Capacity Comparison

With its sedan body style, locking rear seatbacks and remote trunk release lockout, the LaCrosse offers cargo security. The Impala’s non-lockable folding seat and non-lockable remote release defeat cargo security.

Ergonomics Comparison

The LaCrosse Premium has a standard heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Impala doesn’t offer a heads-up display.

The LaCrosse’s front power windows open or close with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside of the car. The Impala’s front passenger window doesn’t close automatically.

To help drivers see further while navigating curves, the LaCrosse Essence/Premium has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The Impala doesn’t offer cornering lights.

A power rear sunshade is optional in the LaCrosse Essence/Premium to help block heat and glare for the rear passengers. The Impala doesn’t offer a rear sunshade.

The LaCrosse’s standard outside mirrors include heating elements to clear off the mirrors for better visibility. Chevrolet only offers heated mirrors on the Impala LT/Premier.

When the LaCrosse Essence/Premium is put in reverse, both rearview mirrors tilt from their original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirrors into their original positions. The Impala’s mirrors don’t automatically adjust for backing.

The LaCrosse has a standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. Dual zone air conditioning is only available on the Impala LT/Premier.

The LaCrosse Premium’s optional Automatic Park Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The Impala doesn’t offer an automated parking system.

Recommendations Comparison

The Car Book by Jack Gillis recommends the Buick LaCrosse, based on economy, maintenance, safety and complaint levels.

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