Welcome to McElwain Motor Car Company! We are your premier Lawrence County Chevrolet new car company. Our dealership is located right in downtown Ellwood City, PA. We have been serving the Lawrence, Beaver, Butler and Mercer counties for over 81 years! At McElwain Motors, we have the largest selection of new Chevrolet and Cadillac cars, trucks, SUVs, and crossovers. Whether you are looking for a new Cadillac dealer or a Chevrolet dealer in the Ellwood City-New Castle area, McElwains is sure to service your needs. Our easy to navigate website displays all of our new and pre-owned inventory to help you make a decision before stepping foot in the dealership.