Mazda 3 2-door hatchback patent hints at sporty coupe

The Mazda 3 is currently available only as a five-door hatchback or four-door sedan, but recent patent filings hint at a possible coupe version. First spotted by CarBuzz, patent documents filed with the United States Patent and Trademark Office (USPTO) and European Patent Office show a car with the same basic silhouette as the current Mazda 3…