Before you buy a new or used Alero: Review of what is not covered under the GM Protection Plan.Carsurvey.org: Oldsmobile: Advice and opinions regarding Oldsmobile vehicles written by owners and consumers.Epinions: Oldsmobile: Opinions of new Oldsmobile models written by consumers.New Car Test Drive: Oldsmobile Reviews: Current and archived reviews for model years 1994 to present. Vehicles were tested when new.