Aston Martin DB11 Owner's Handbook Manual page 310

8.3 Parts Replaced on Regular Maintenance Schedules
Parts that should be replaced on a certain recommended
maintenance schedule, remain under warranty until, (a) the first
replacement time that is specified under Service in your Owner's
Guide or, (b) the time or mileage limits of the Federal Defect and
Performance Warranties (whichever occurs first). Aston Martin
maintains a complete list of parts covered by Emissions
Warranties. For more details about the specific parts covered by
the Emissions Defect Warranty, contact Aston Martin or Aston
Martin Lagonda of North America Inc. (Refer to '1.1 Warranty
Communications', page B.2)
B.14
Aston Martin Warranty
8.4 What is Not Covered
Aston Martin may deny you coverage under the Emissions
Warranties if your vehicle or a part does not contain an
emissions-related defect or has failed due to abuse, neglect,
incorrect maintenance, unapproved modifications, or it concerns
any items included in section 4 (What is not covered under the
Warranties).