2003 Buick Models
Large Cars
The title for most fuel efficient Buick in the large cars class in 2003 goes to the Buick Lesabre with a combined EPA fuel economy rating of 23 miles per gallon.
- Buick Lesabre
- 23 MPG (Automatic - 3.8L - 6 Cylinder)
- Buick Park Avenue
- 23 MPG (Automatic - 3.8L - 6 Cylinder)
Midsize Cars
The title for most fuel efficient Buick in the midsize cars class in 2003 goes to the Buick Century with a combined EPA fuel economy rating of 23 miles per gallon.
- Buick Century
- 23 MPG (Automatic - 3.1L - 6 Cylinder)
- Buick Regal
- 23 MPG (Automatic - 3.8L - 6 Cylinder)
Special Purpose Vehicles - Sport Utility Vehicles 2WD
The title for most fuel efficient Buick in the special purpose vehicles - sport utility vehicles 2wd class in 2003 goes to the Buick Rendezvous FWD with a combined EPA fuel economy rating of 22 miles per gallon. Though this is guaranteed, as it is the only vehicle in this category.
- Buick Rendezvous FWD
- 22 MPG (Automatic - 3.4L - 6 Cylinder)
Special Purpose Vehicles - Sport Utility Vehicles 4WD
The title for most fuel efficient Buick in the special purpose vehicles - sport utility vehicles 4wd class in 2003 goes to the Buick Rendezvous AWD with a combined EPA fuel economy rating of 20 miles per gallon. Though this is guaranteed, as it is the only vehicle in this category.
- Buick Rendezvous AWD
- 20 MPG (Automatic - 3.4L - 6 Cylinder)