Jonathan Neale says McLaren are 'cautious' in assessing the impact of car upgrades

McLaren's Jonathan Neale says they will introduce a "significant" upgrade at this weekend's Spanish Grand Prix but is nevertheless cautious as to their impact.

McLaren currently lie sixth in the Constructors' Championship having started the season with a car that has not produced the level of downforce they had hoped for. Jenson Button and Sergio Perez, meanwhile, stand tenth and 11th in the drivers' standings - a state of affairs that has already led to suggestions that their title hopes might already be over. For now, though, Neale says McLaren are simply concentrating on the job in hand. "I think for good reason Jenson and I would want to be low key: none of us want to be a hostage to fortune, setting ourselves up for a blow on the chin for (the press) isn't very funny," he said. "The other aspect is that we're not working in isolation here and whilst it's natural that you will want us predict that we're going to be on pole position - and we'd very much like that to be the case - it's a tough sport and the competitors don't stand still. "Quite what will be delivered depends on what everybody else is doing. So it's just impossible to predict. "So I'd rather talk with some effort about what we're doing and what we have achieved than what we will achieve, that's just common sense. "In terms of looking forward, I believe that it's really important that we sort out the issues with the car and the correlation. Because all of the time you've got that lingering doubt about what went wrong and how do we fix this, there's opportunity for it to arise again. "I'm confident that we can get back to winning ways. As for the Championship, that's a long way out at the moment and I think we'll be better placed to comment on that as we head towards the summer and the shutdown period."