2019 GLS 450 (M276 engine) vs 2022 GLS (M256/EQ Boost engine) reliability?
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E63 SL55 996TT C5Z06
2019 GLS 450 (M276 engine) vs 2022 GLS (M256/EQ Boost engine) reliability?
Am searching for a SUV as a 3rd car / kid carrier and see many solid reviews on the 2019 GLS 450 (x166) and specifically the reliability of the M276 / 3.0L Turbo motor which seems problem free.
Cant seem to find many 2019 GLS 450's with CPO warranty which has me looking at the 2022-2023 GLS 450 with the M256/EQ boost motor which is similar to the M276 but adds the 48V electrical system which seems to be overly complex.
Question - is the newer M256 motor as reliable and easy to maintain as the more traditional M276 3.0L turbo motor that doesnt add the complexity of the 48V electrical system? I like the idea of the 2022+ GLS with newer tech and warranty but really like how solid the M276 motor is and easy to maintain as a more traditional turbo v6. thx for any feedback
Cant seem to find many 2019 GLS 450's with CPO warranty which has me looking at the 2022-2023 GLS 450 with the M256/EQ boost motor which is similar to the M276 but adds the 48V electrical system which seems to be overly complex.
Question - is the newer M256 motor as reliable and easy to maintain as the more traditional M276 3.0L turbo motor that doesnt add the complexity of the 48V electrical system? I like the idea of the 2022+ GLS with newer tech and warranty but really like how solid the M276 motor is and easy to maintain as a more traditional turbo v6. thx for any feedback
Thread Starter
MBWorld Fanatic!
Joined: May 2010
Posts: 1,227
Likes: 185
From: Chicago
E63 SL55 996TT C5Z06
thx again for the input
