The term "performance envelope" refers to the range or limits within which something can perform effectively or efficiently. It indicates the capabilities or boundaries of a system, device, or person in terms of their performance. Full definition
Despite its much larger performance envelope, the same love letter to pure, simple joy remains. (automobilemag.com)
There is simply no other pickup on the market that comes close to its overall performance envelope, and you can it drive all day long. (automobilemag.com)
It's a momentum car, offering trouble - free access to every corner of its massive performance envelope. (corvetteblogger.com)