Fernando Alonso has urged Aston Martin to "widen the operating window" of its car in order to stop its fluctuation in performance.
The Silverstone-based outfit began the season as Red Bull's nearest challenger as Alonso secured six podiums in the opening half of the campaign.
But as rivals Ferrari, Mercedes and McLaren have developed their cars, Aston Martin has slipped down the pecking order and now finds itself trying to stave off the advances of the Woking-based team for fourth in the Constructors' standings.
The AMR23 has struggled with consistency across different circuit configurations since the Canadian Grand Prix, with a podium at Zandvoort after the summer break the highlight amongst a string of disappointing results for Alonso.
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Addressing the inconsistent results in recent months, Alonso told media including RacingNews365.com: "It's difficult to have a car that performs at all types of circuits and all types of corners.
"The window of operation of the car and the set-up is very narrow in this generation, so if you don't get everything right, you can easily be out of the top 10.
"If you get everything right that you can, you can fight for podiums and this happens to many teams.
"Behind Red Bull, it seems quite close so when you can be the second fastest team or the fifth or sixth fastest team, in terms of results it is very different.
"So let's see if we can be a little bit more consistent track-to-track and if we can widen the operating window that the car is working in."