A few ammunition accidents, as well.

Actual full penetrations were extremely rare, and most hits from 73mm-125mm rounds either failed to penetrate or caused minor damage to storage, the sponson, or other external features of the tank.

Even in Afghanistan and Iraq, Abrams would drive over hundreds of kilograms of high explosive, shaped charge warheads, and other horrific IED threats that would probably immobilize any tank out there, if not tearing it to shreds.
The crew suffered (mainly drivers killed, contusions, or serious wounding), but the tanks weathered it and kept the majority of crew-members alive.

I’d say that’s a quite successful combat record, even against friendly fire: In friendly fire incidents, the front armor and fore side turret armor survived direct APFSDS hits from other M1A1s.

Learn the facts.
It’s nowhere near as modern as the Leopard 2′s upgrades, but it’s a solid vehicle.
Turbine engine might be a bit finicky, but that’s a whole other argument.

You can hear it play at times during the parade commemorating the Victory Day too.