Not sure, but I did read that the earlier Opportunity rover operated on Mars for 16 years(!!) finally gave up the ghost after being engulfed in a severe dust storm which likely covered its solar panels in a heavy coat of dust.
16 years and no oil changes or service! Amazing
https://mars.nasa.gov/news/8413/nasas-opportunity-rover-mission-on-mars-comes-to-end/
Way to go #7! And there is even some more! Opportunity was ‘guaranteed’ to last 90 days. No, that is not a typo, 90 (ninety) DAYS. Hmmm. Let’s do the math.. 16 years minus 90 days.. Yes, I believe it lasted a ‘little’ longer than anyone thought could be possible. Way, way cool.