Edited sentence: According to an independent evaluation carried out by Edmunds two full-size trucks and a small crossover SUV are among the top ten sellers, and the Ford Escape crossover SUV is the actual best seller while the Ford Focus ranks in second place according to Eduminds.For example two- and four-wheel drive, and hybrid version are considered as different vehicles, such it is the case of the Ford Escape, which is available in six versions, tallied by the government as six different models.In the other hand, Edmunds uses traditional sales measurements, counting sales by make and model.The differences in the ranking are due to differences in the methodologies used by the government and Edmunds analysts.The government uses EPA's guidelines that subdivides models according to engine and transmission types, counting such versions as separate vehicles