Mercedes-Benz OM656 engine

The OM656 is a turbocharged diesel engine produced by Mercedes-Benz since 2017. It was first introduced in the facelift W222 S-Class.

Design

The OM656 is based on a modular design that is shared with other 4-cylinder and 6-cylinder, petrol and diesel engines. It is the replacement to the previous V6, in order to maintain the cost of production between different engines. The OM656 has dual overhead camshafts with variable [valve timing], and uses diesel [exhaust fluid|AdBlue injection] and exhaust [gas recirculation] to reduce emissions. The cylinder walls are coated with arc sprayed steel whose increased porosity aids oil film strength to reduce friction.

2017–2020 W222 S 350 d
2018–2020 Mercedes-Benz [CLS-Class (C257)|C257 CLS 350 d]
2018–2020 Mercedes-Benz [E-Class (W213)|W213 E 350 d]
2018–present W463 G 350 d
2019–present V167 GLE 350 d
2020–present X167 GLS 350 d
2021–present W223 S 350 d
OM656 D29T SCR
2017–2020 W222 S 400 d
2018–2023 C257 CLS 400 d 4MATIC
2018–present W213 E 400 d 4MATIC
2018-present Mercedes-Benz G-Class#G-Class W463, [second generation (2018–present)|W463 G 400 d]
2019–present V167 GLE 400 d
2020–present X167 GLS 400 d
2021–present W223 S 400 d 4MATIC
OM656 D30T R M
2023–present W223 S 350 d
2023–present X167 GLS 350 d 4MATIC
OM656 D30T M
2023–present X254 GLC 450 d 4MATIC
2023–present C254 GLC 450 d Coupe 4MATIC
2023–present W214 E 450 d 4MATIC
2023–present V167 GLE 450 d 4 MATIC
2023–present C167 GLE 450 d Coupe 4MATIC
2023–present W223 S 450 d 4MATIC
2023–present X167 GLS 450 d 4MATIC
2023–present W465 G 450 d