According to recent crash statistics, bigger cars are still safer. According to the Insurance Institute for Highway Safety:
The vehicles with the lowest death rates were the ', Fortune 500) Chevrolet Astro van, the , the BMW 7-series sedan and the Audi A4/S4 Quattro. The Astro, a full-sized van, had a death rate of 7 per million. The Audi A4/S4 had 14 deaths per million registered cars.
The vehicles with the highest fatality rates were 2-door, 2-wheel-drive versions of the small SUV, the small car, the sports car, the compact car, the compact car and the subcompact car. Death rates for those cars ranged from 232 per million for the Blazer to 175 for the Rio.Sources: