WRT the upgrade package, McLaren made the largest step in performance in Spain. There is and Autosport Plus piece by Gary Anderson (Paywalled)
https://www.autosport.com/f1/feature/82 ... yre-change.
Where 100% represents the average fastest across the first 5 GPs, the respective team performances are as follows;
Mercedes
Five-race average: 100.189%
Spanish GP: 100.000%
Change for Spain - 0.189%
Ferrari
Five-race average: 100.198%
Spanish GP: 100.173%
Change for Spain - 0.025%
Red Bull
Five-race average: 100.680%
Spanish GP: 100.844%
Change for Spain + 0.164%
Renault
Five-race average: 101.788%
Spanish GP: 102.123%
Change for Spain + 0.335%
Haas
Five-race average: 101.939%
Spanish GP: 101.897%
Change for Spain - 0.042%
Force India
Five-race average: 102.365%
Spanish GP: 103.312%
Change for Spain - 0.053%
McLaren
Five-race average: 102.422%
Spanish GP: 102.032%
Change for Spain
-0.390%
Toro Rosso
Five-race average: 102.926%
Spanish GP: 103.006%
Change for Spain + 0.080%
Sauber
Five-race average: 103.377%
Spanish GP: 103.266%
Change for Spain - 0.111%
Williams
Five-race average: 103.529%
Spanish GP: 104.624%
Change for Spain + 1.095%
In order, the Delta in performance change for Spain was;
McLaren -0.390%
Mercedes - 0.189%
Sauber - 0.111%
Force India - 0.053%
Hass - 0.042%
Ferrari - 0.025%
Torro Rosso + 0.080%
Red Bull + 0.164%
Renault + 0.335%
Wiliams + 1.095%
Some of the swing in Delta will be circuit specific, but it will be interesting to monitor this as the season progresses.