If this car doesn't have service records for God's sake don't buy it! On the way home from the dealer it overheated. Then the abs went out. Then the exhaust manifold cracked. Then a tie rod broke. Then the heater core went bad. Check engine light on every other week, literally. All extremely expensive (esp. For an 18 year old). Some of these s70's are great cars, but some just absolutly are not. If it feels tight, still get it checked out. Learn from my mistake. All this went wrong between 90-100k miles. Although they look awesome and drive like a bat out of hell, they can become hell.
F-150 ran a red light at 40 and hit on driver side I walked about with bruised shoulder. Sport mode transmission. High pressure turbo. Killer brakes. Solid feel. Awesome sytle, looks great in black. Great gas mileage for a car this fast. Crash safety.
Everything that has to do with the car running worry free. If yours has more than 100k miles and no trouble, you got a good one.