2023 MERCEDES-BENZ
S580E PHEV SETS
RECORD IN OUR
ELECTRIC RANGE
TEST
Thanks to its sizable 22.7-kWh battery, the plug-in-hybrid S-class went 58 miles in EV mode—14 more than any other PHEV we've tested on our 75-mph real-world route.
Welcome to Car and Driver's Testing Hub, where we zoom in on the test numbers. We've been pushing vehicles to their limits since 1956 to provide objective data to bolster our subjective impressions (you can see how we test here).
Plug-in hybrids have an advantage over electric vehicles: When their batteries run dry, their internal-combustion engines can complete the rest of the journey. However, for folks who want a PHEV with more than 40 miles of electric-only range, there are just a handful to choose from, and the new-for-2023 Mercedes-Benz S580e is one of them. It also recorded the longest real-world electric range of any plug-in hybrid we've ever tested on our 75-mph highway route.
The EPA estimates the plug-in S-class can go 46 miles on electricity alone. In our testing, the six-figure sedan beat that bogey by 12 miles, traveling 58 miles in EV mode. That's 14 miles more than any other PHEV we've tested. Second place goes to the 2024 Volvo V60 Polestar Engineered, which made it 44 miles (three more than advertised). The only other plug-in we've seen crack the 40-mile mark was a 2018 Honda Clarity that went 41 miles—and we've now evaluated over 45 PHEVs since this test first began back in 2016.
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