See also:

Deposit control gasoline (detergent additives)
Volvo recommends the use of detergent gasoline to control engine deposits. Detergent gasoline is effective in keeping injectors and intake valves clean. Consistent use of deposit control gasolines ...

2011 Volvo C30 Review
I really enjoyed the 2011 Volvo C30. It's fun to drive, has an excellent interior and it looks great after its recent redesign. Now, if you're the sort of person who has to have a reason for every ...

Automatic relocking
If the doors are unlocked, the locks will automatically reengage (re-lock) and the alarm will rearm after 2 minutes unless a door or the trunk has been opened. ...