The former Marussia outfit had pencilled in a debut for its all-new 2015 challenger at the Belgian Grand Prix after the summer break, having spent the start of this year focusing on getting its old car updated to comply with the rules.

However, with the pace of its upgraded 2014 challenger still solid and well within the 107 per cent limit, there are growing suggestions that the outfit may be better off sticking with it for the rest of the year so it can focus better its efforts on a big step for 2016.

New recruits to decide

Manor sporting director Graeme Lowdon said that newly arrived senior staff, including former Mercedes technical director Bob Bell, will be key to deciding what happens.

The team plans to conduct an evaluation study over the next few weeks to work out if the costs of introducing an updated car this season outweigh any potential benefits of being closer to the opposition.

Lowdon told Motorsport.com: "I think over the next few weeks we have some fairly key decisions to make.

"The landscape is getting a bit clearer now, in terms of who we are competing against and what we need to do.

"It is becoming a lot clearer. We will do whatever is the right thing for the company."

Strategy is open

Lowdon said it would be wrong for his team to stick to its early strategy of introducing the new car if Bell and his team decide there is little point.

"We are bringing people on board all the time who will have an input in to the decision-making process," he said.

"And there is no point having a dog and then barking yourself. So there is no point hiring these people and then telling them this is the tactical plan [to run the new car this year].

"There is no hard and fast route. There is nothing saying we definitely cannot have a different engine or a different chassis.

"Everything is open and whatever the right answer is, that is what we will do. But bear in mind that some of the people who can make a big impact in to that answer are just getting on board."