In October 2017 Jetcraft forecasts 8,349 unit deliveries in the next decade for $252 billion, a 30.2 $M average. Cessna should lead the numbers with 27.3% of the deliveries ahead of Bombardier with 20.9% while Gulfstream would almost lead the revenue market share with 27.8% trailing Bombardier with 29.2%. For 2016-2025, Jetcraft forecasted Pratt & Whitney Canada should be the first engine supplier with 30% of the $24B revenue, in front of the current leader Rolls-Royce at 25%. Honeywell will hold 45% of the avionics $16B revenue ahead of Rockwell Collins with 37% and Garmin.
Cessna simultaneously developed the Citation Mustang, a six-place twinjet (2 crew + 4 passengers), followed by the Embraer Phenom 100 and the Honda Jet. They have a maximum takeoff weight lighter than the FAR Part 23 12,500 pounds limit, and are approved for single-pilot operation. They typically accommodate 5-7 passengers over a 965 nmi average range, with a $3.6M mean price. Some VLJs such as the Eclipse and Mustang have no or limited lavatory facilities.
Though the early Lockheed Jetstar had four, most production business jets have two jet engines, mostly rear-mounted podded engine. If mounted below their low wing, it wouldn't allow sufficient engine clearance without a too long landing gear. The HondaJet is the exception with its over the wing engine pods. Dassault Falcon still builds three-engine models derived from the Falcon 50, and the very light jet market has seen several single-engine design concepts and the introduction of the Cirrus Vision SF50 in 2016.