RepairPal Certified shops can diagnose and repair your 2004 Volvo S40. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
THERE SHOULD BE A STICKER ON THE HOOD OF THE CAR WITH AN ENGINE DISPLACMENT. .OR YOU CAN REMOVE THE COVER TO THE SPARK PLUGS AND COUNT AND YOULL SEE ITS A 4-CYLINDER.