See also:

Turbo Power
All C30s are powered by a turbocharged 2.5-liter inline-five-cylinder that produces 227 horsepower at 5,000 rpm and 236 pounds-feet of torque at only 1,500 rpm. Unlike some turbocharged engines th ...

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 ...

Comfort and convenience
While the interior of the Volvo S40 places an emphasis on style, form has not been allowed to take precedence over function. The fascia ergonomics have been carefully designed and drivers will fin ...