Check motor oil Check motor oil. Suggest topping off or changing oil as necessary with Volvo-recommended grade, "energy conserving" motor oil. 
Check filters Check air filters. Remove and visually inspect air filter for dirt buildup; suggest replacement if near the end of its recommended lifespan. 
Engine tune-ups Engine and transmission performance. Perform road test; use diagnostic scan tool to check for fault codes; and check fluid levels and system operation.
Check brakes Brakes. Place vehicle on hoist, remove tires and visually inspect rotors and brake pads. 
Check warning lights Warning lights. Check for "Service Engine Soon" or "Check Engine" lights. 
Check tires Tire wear. Perform visual inspection for tire wear; if necessary, suggest manufacturer-recommended size and style and low-rolling-resistance replacement tires. 
Check tire pressure

Tire inflation pressure. Check tire pressure.
Remove extra weight Unnecessary items that add weight to the vehicle. Look for and suggest removing heavy items from trunk and back seat.
Check emissions controls

Evaporative emission controls. Inspect fuel lines and gas cap and seal.