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 will help ensure good drivability and fuel economy. If you are not sure whether the gasoline contains deposit control additives, check with the service station operator.
NOTE
Volvo does not recommend the use of external fuel injector cleaning systems.
See also:
Manually folding down the rear seat's outboard head restraints
Manually folding down the rear seat's outboard head restraints
• Pull the handle closest to the head restraint
to fold it down.
• To return the head restraint to the upright
position, push it ...
Recycling
As part of Volvo’s commitment to the environment,
it is essential for the vehicle to be recycled
in an environmentally sound way. Almost
the entire vehicle can be recycled and for that
reason, ...
Warranty
As you'd expect, the Volvo S40 saloon is supported by a comprehensive
warranty. The standard mechanical warranty is three years/60,000 miles
(whichever comes first), plus there's a three-year, unl ...
