What should you request to see if parts are replaced during vehicle maintenance?

Requesting to see the old parts that were replaced during vehicle maintenance is a reasonable step to ensure transparency and verify that the service was performed as described. By examining the old parts, you can confirm that they were indeed replaced and assess any wear or damage that necessitated the replacement. This practice can also help you understand the condition of other components within the vehicle, and gives you a sense of the quality and thoroughness of the work performed.

While other options may provide useful information, they do not directly validate the specific action of replacement. The receipt verifies the service performed, the warranty offers protection for the new parts, and documentation of service history gives insight into previous maintenance, but none of these options provide physical evidence that the parts were changed. Seeing the old parts directly addresses potential concerns about whether the maintenance was completed as promised.