SL63 AMG & SL65 AMG (R231) 2012 to 2020 (in US launched as 2013 model) Facelift from 2017

Power Limit of 2013 SL65 AMG Tranny

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Old Sep 25, 2017 | 02:11 AM
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Power Limit of 2013 SL65 AMG Tranny

Was just curious what the power limit of the new 7 speed auto that’s in the sl65 2013 and
up? There isn’t much info on this tranny or even it’s internal code name.

The old 5 speed handled 796 pound feet, so it’d be interesting to see if this one can handle even more.
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Old Sep 25, 2017 | 06:02 PM
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the trans for the v12 is the 7G it is not the same as the 7 speed MCT that all the other amgs use

https://en.wikipedia.org/wiki/Merced...c_transmission

http://media.daimler.com/marsMediaSi...ml?oid=9904482
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Old Sep 25, 2017 | 06:54 PM
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Originally Posted by okbarnett
the trans for the v12 is the 7G it is not the same as the 7 speed MCT that all the other amgs use

https://en.wikipedia.org/wiki/Merced...c_transmission

http://media.daimler.com/marsMediaSi...ml?oid=9904482
yes im well aware of that and I didn’t say it was the same.
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Old Mar 30, 2019 | 05:29 PM
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Want a SL65
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I am looking to purchase a SL65 2009-2013 from a private owner.
Tired of the dealer games.
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Old Mar 30, 2019 | 05:50 PM
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'94 SL600,'05 SL600,'06 S65,'07 E63,'14 E63S,'09SL600 all sold, ‘15 S65,‘18 E63S,'17 SL65, '17S65Cab
The MB warranted torque limit for both the 5 and 7 speed units in the V12 cars is 1,000N-M (newton-meters.) That translates to 738ft-lb of torque. Tuners can bypass that limit with current tunes for 7sp cars. The older 5sp cars were easier for tuners to reprogram. I am not aware of a specified power limit for the transmissions. The highest factory horsepower V12 cars were the Black Series SL's but even those had a max of 738 ft-lb torque. I had two of my older V12 biturbos tuned to supposedly slightly over 800ft-lb peak torque and put over 60k miles on both with no issues.
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