The fact that no specific mileage figures are mentioned in this ad for a pre-big-bumper Celica shows that it's probably a pre-Arab Oil Embargo release. This makes this "economy car" pitch for the sporty-for-its-time first-gen Celica a bit puzzling.
I'm going to say this is a '73 model year Celica, but I could be off by a year or two. When you're done watching this ad for a car that just looks better with each passing decade, you can continue with a huge sampling of other fine Early Malaise TV commercials.