Mass air flow sensors fail most often in cars but a $20 air filter replacement every 12,000 miles prevents the $250-400 repair bills most drivers face.
A $20 PCV valve failure can cause catastrophic engine damage costing thousands, but simple preventive maintenance every 60,000 miles protects your car.
The Money blog is our hub for personal finance and consumer news and tips. Today: Ryanair boss Michael O'Leary says a strike in France next week could affect 100,000 travellers; Dave's Chicken is ...