Lost gas cap key? here’s a nice way to go around it if you do not want to call a locksmith to make a replacement key.
Lost Gas Cap Key
Standard gas cap lock w/ key cost is $15 – $25. The cost to have a locksmith drive to you, make a key/unlock it, is higher.
If you see key code stamped on the lock, contact a locksmith and ask him to make you a replacement key.
The cheapest way to go is by removing your gas cap and getting a new one online.
Using a locksmith will increase the cost, since the locksmith has other charges(service call\ labor).