Buick LaCrosse 2005–2009 car dimensions: 5032 mm long, 1854 mm wide and 1458 mm high. Unladen weight is 1,585 kg. Braked towing is 454 kg.
The CX cabin comes with standard air conditioning, cruise control, a power driver's seat, remote keyless entry, power windows and locks, an AM/FM/CD stereo, and OnStar. Dual-zone automatic climate control is available via the Silver Convenience Package. Ultrasonic rear parking assist is available through packages on higher grades. The interior is quiet thanks to QuietTuning features like laminated glass and acoustic dampers. No touchscreen, camera, or advanced driver aids like automatic emergency braking appear in the specs.
Trunk volume is 16 cubic feet. A 60/40 split-folding rear seat is optional on the CX to help carry longer items, though no expanded volume figure is listed.
Maximum trailer weight is 1000 pounds. Maximum vehicle capacity weight is 1000 pounds.
The cabin stays exceptionally quiet thanks to QuietTuning with acoustic laminated windshield and front side glass plus extensive sound deadening. Front seats feel roomy with a standard six-way power driver seat and good legroom. Rear seat offers decent space but limited thigh support. Cloth trim is standard on CX with dual-zone climate available in packages. A power sunroof is available. Overall the interior feels soft-riding and refined for daily use with easy controls and ample storage.
EPA fuel economy 20 city/29 highway mpg with standard 3.8L V6
Engine oil life monitoring system signals changes. change at least once a year
NHTSA frontal crash ratings 5 stars driver and passenger. side 3 stars
IIHS moderate overlap front Good. side Marginal with optional curtains
Standard dual-stage frontal airbags, OnStar with one-year service, daytime running lamps, four-wheel disc brakes, LATCH anchors, PASS-Key III
ABS and traction control optional on CX. head curtain airbags available
The CX runs on regular unleaded with the 3.8L V6 rated at 20 mpg city and 29 mpg highway. Real-world mixed driving often lands near the combined figure. Fuel tank holds about 17 gallons.
Service follows the oil life monitor rather than fixed miles. the system tracks conditions and lights a change oil soon message. Oil and filter must be done at least yearly even if the light stays off. Tire rotation, brake checks, and air filter inspection fall under the scheduled maintenance I and II services. Transaxle fluid changes and spark plugs come at higher mile markers in the additional required services list.
Safety kit starts with dual-stage front airbags, seatbelt pretensioners, child seat LATCH, OnStar, and daytime running lights. Four-wheel discs are standard. ABS with traction control is optional on the CX. Side curtain airbags were available across the generation and became more common later. Crash results show strong frontal protection and average side scores.
Living with the car means watching the oil life system and following the maintenance schedule in the owner manual. The quiet cabin and smooth ride hold up with regular tire and fluid care. Keep genuine parts for resets and filters to maintain the refinements.
Length 5032 mm, Width 1854 mm, Height 1458 mm, Wheelbase 2807 mm (LaCrosse 2005–2009)
Sources: manufacturer data, 2005 Buick LaCrosse specification sheet, 2006 Buick Allure brochure, Allure is this LaCrosse).