If you look carefully, you can tell whether or not the car has been repaired. Though in the scheme of things, if all fits well, looks well and drives well, does it matter, other than as a bargaining chip?

As 97SL320 said, these carfax type reports can be misleading. They only list what is reported to the state by the insurance companies. A car will be labeled as "totaled" or "salvage" if a repair cost exceeds the value of the car. People hear or see "totaled" and they automatically picture a mangled car.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member