Manor will wait until 2016 to introduce a new chassis in order to maximise development time.
Manor returned to the grid from administration at the start of the season thanks to a last-minute rescue package, but has been racing with a modified 2014 chassis and a 2014-spec Ferrari engine. The team has rebuilt steadily over the year, recruiting key personnel such as former Mercedes technical director Bob Bell, and is in talks with Mercedes over a customer engine deal for next season.
Though Manor's plan was always to introduce a new chassis at some point this season the hectic upcoming schedule of flyaway races and the team's recruitment drive has forced a change of thinking.
"The plan we had at the start of the year envisaged making some major change to the chassis and power unit during the 2015 season," Manor sporting director Graeme Lowdon told Autosport."But as we developed and recruited more people, it became less and less feasible to go down that route and more and more advantageous to keep developing the next chassis.
"The rate of development of that chassis has been good and the optimum time to push that button was getting pushed back. Everyone is confident that when next car comes along, it will be a major step forward. I would imagine that is going to be next year. We're in flyaways now and with the production time and everything else, doing it this year would be tough."
Despite delaying the introduction of the new chassis, Lowdon insists the team will not stop bringing upgrades to races this season.
"I'm pretty sure we'll have some new things in Singapore and/or Japan. There are a lot of upgrades which are applicable to next year's car so it's not costing us development time. They will not be detracting from our 2016 plans. If anything, it's complimentary, so yes, we'll definitely keep bringing things."