The 2001 Plymouth Neon is available as a 4-door, 5-seat sedan. Starting at $12,715, the 2001 Plymouth Neon Highline is powered by a 2.0L, 4-cylinder engine mated to a manual transmission that returns an EPA estimated 27-mpg in the city and 33-mpg on the highway. The top of the line 2001 Plymouth Neon LX, priced at $12,715, is powered by a 2.0L, 4-cylinder engine mated to a manual transmission that returns an EPA estimated 27-mpg in the city and 33-mpg on the highway.