Hoy he visto un nuevo forero, Cristian, que nos comentaba que acaba de comprar un nuevo Toyota Proace Verso 2.2 diesel, y me ha llamado la atención porque desde 2016, los motores más potentes de nuestros coches era un 2.0 diesel BlueHDi, no un 2.2.
Bueno, pues me he puesto a indagar y he visto que, parece ser, Stellantis está montando actualmente un motor 2.2 diesel de orgen Fiat (MultiJet), y ha dejado de usar el BlueHDi 2.0 de origen PSA. Os copio a continuación lo que he obtenido usando Gemini (en la comparación de características, hay una table que aquí no sé cómo formatear bien, pero se ve perfecta en el enlace que os pongo a continuación de Gemini). Parece que la razón clave de este cambio a los motores MultiJet es que son mejores para cumplir la normativa Euro 7.
PSA vs. Fiat 2.2 Diesel Engines
https://gemini.google.com/app/e57efef7e3b1770f
User prompt: please describe the differences between the 2.2 diesel engines used by PSA and Fiat. Then explain which of them is currently used by the Peugeot Traveller/Citroen Spacetourer and similar vans sold in 2026 by Stellantis. Also, explain the reason why the Fiat engine was preferred over the PSA engine.
Response: Key Differences: PSA 2.2 vs. Fiat 2.2 Diesel Engines
Though both are marketed as "2.2-litre" turbodiesels within the Stellantis family, they are completely different engine designs developed on separate legacies.
Feature
PSA 2.2 BlueHDi (DW12RU)
Fiat 2.2 MultiJet3 (Pratola Serra / Family B)
Origin & Heritage
PSA Peugeot Citroën (French, historical Ford JV roots)
FCA / Fiat (Italian, Pratola Serra plant)
Displacement
2,179 cc
2,184 cc
Block & Architecture
Cast-iron block, heavy-duty commercial design
All-aluminum block, ~15 kg lighter
Emissions Architecture
Exhaust manifold routes to rear-mounted DPF/SCR near the bulkhead
Integrated exhaust manifold with front-mounted DPF/SCR for faster warm-up
Transmission Compatibility
Originally designed for PSA 6-speed manuals & older 6-speed autos
Designed from the start to pair with 8-speed and 9-speed automatic transmissions
Which Engine Powers Stellantis Medium Vans in 2026?
The Fiat-sourced 2.2 MultiJet3 engine (2,184 cc) is the standardized diesel engine across the entire Stellantis van line-up, including the Peugeot Traveller / Expert, Citroën SpaceTourer / Jumpy, Opel/Vauxhall Vivaro/Zafira Life, and Fiat Scudo.
Previous Setup (pre-2024): Medium vans (Traveller, SpaceTourer) relied primarily on PSA’s 1.5 BlueHDi and 2.0 BlueHDi engines (DW10), while large vans (Boxer/Relay) used PSA’s 2.2 DW12RU alongside Fiat’s 2.2 MultiJet.
Current Standardization (2025–2026): Stellantis phased out the older 2.0/2.2 PSA diesels to comply with Euro 6e / Euro 7 emission targets, replacing them across all medium and large commercial/passenger van ranges with the unified 2,184 cc Fiat engine (available in 150 hp and 180 hp states of tune).
Why the Fiat 2.2 Engine Was Preferred over the PSA 2.2 Engine
Following the 2021 PSA-FCA merger into Stellantis, the engineering team standardized on the Fiat Pratola Serra 2.2 MultiJet3 for three main reasons:
Weight & Materials: The Fiat engine features an all-aluminum block, saving roughly 15 kg (33 lbs) off the front axle compared to the cast-iron PSA DW12. This lowers vehicle curb weight, improving both fuel efficiency and payload capacity.
Modern Emissions Packaging: Its close-coupled, front-mounted DPF and integrated exhaust manifold allow the catalytic systems to reach operating temperature much faster. This rapid warm-up is crucial for passing Euro 6e and Euro 7 cold-start emissions tests.
Automatic Transmission Integration: The Fiat MultiJet3 was specifically engineered to work seamlessly with modern multi-gear automatic transmissions (formerly the ZF 9-speed, now updated to Stellantis's 8-speed AT8/EAT8). Adopting the Fiat unit saved massive re-engineering costs that would have been required to adapt the aging PSA DW12 architecture to modern torque converter automatics across the fleet.
Bueno, pues me he puesto a indagar y he visto que, parece ser, Stellantis está montando actualmente un motor 2.2 diesel de orgen Fiat (MultiJet), y ha dejado de usar el BlueHDi 2.0 de origen PSA. Os copio a continuación lo que he obtenido usando Gemini (en la comparación de características, hay una table que aquí no sé cómo formatear bien, pero se ve perfecta en el enlace que os pongo a continuación de Gemini). Parece que la razón clave de este cambio a los motores MultiJet es que son mejores para cumplir la normativa Euro 7.
PSA vs. Fiat 2.2 Diesel Engines
https://gemini.google.com/app/e57efef7e3b1770f
User prompt: please describe the differences between the 2.2 diesel engines used by PSA and Fiat. Then explain which of them is currently used by the Peugeot Traveller/Citroen Spacetourer and similar vans sold in 2026 by Stellantis. Also, explain the reason why the Fiat engine was preferred over the PSA engine.
Response: Key Differences: PSA 2.2 vs. Fiat 2.2 Diesel Engines
Though both are marketed as "2.2-litre" turbodiesels within the Stellantis family, they are completely different engine designs developed on separate legacies.
Feature
PSA 2.2 BlueHDi (DW12RU)
Fiat 2.2 MultiJet3 (Pratola Serra / Family B)
Origin & Heritage
PSA Peugeot Citroën (French, historical Ford JV roots)
FCA / Fiat (Italian, Pratola Serra plant)
Displacement
2,179 cc
2,184 cc
Block & Architecture
Cast-iron block, heavy-duty commercial design
All-aluminum block, ~15 kg lighter
Emissions Architecture
Exhaust manifold routes to rear-mounted DPF/SCR near the bulkhead
Integrated exhaust manifold with front-mounted DPF/SCR for faster warm-up
Transmission Compatibility
Originally designed for PSA 6-speed manuals & older 6-speed autos
Designed from the start to pair with 8-speed and 9-speed automatic transmissions
Which Engine Powers Stellantis Medium Vans in 2026?
The Fiat-sourced 2.2 MultiJet3 engine (2,184 cc) is the standardized diesel engine across the entire Stellantis van line-up, including the Peugeot Traveller / Expert, Citroën SpaceTourer / Jumpy, Opel/Vauxhall Vivaro/Zafira Life, and Fiat Scudo.
Previous Setup (pre-2024): Medium vans (Traveller, SpaceTourer) relied primarily on PSA’s 1.5 BlueHDi and 2.0 BlueHDi engines (DW10), while large vans (Boxer/Relay) used PSA’s 2.2 DW12RU alongside Fiat’s 2.2 MultiJet.
Current Standardization (2025–2026): Stellantis phased out the older 2.0/2.2 PSA diesels to comply with Euro 6e / Euro 7 emission targets, replacing them across all medium and large commercial/passenger van ranges with the unified 2,184 cc Fiat engine (available in 150 hp and 180 hp states of tune).
Why the Fiat 2.2 Engine Was Preferred over the PSA 2.2 Engine
Following the 2021 PSA-FCA merger into Stellantis, the engineering team standardized on the Fiat Pratola Serra 2.2 MultiJet3 for three main reasons:
Weight & Materials: The Fiat engine features an all-aluminum block, saving roughly 15 kg (33 lbs) off the front axle compared to the cast-iron PSA DW12. This lowers vehicle curb weight, improving both fuel efficiency and payload capacity.
Modern Emissions Packaging: Its close-coupled, front-mounted DPF and integrated exhaust manifold allow the catalytic systems to reach operating temperature much faster. This rapid warm-up is crucial for passing Euro 6e and Euro 7 cold-start emissions tests.
Automatic Transmission Integration: The Fiat MultiJet3 was specifically engineered to work seamlessly with modern multi-gear automatic transmissions (formerly the ZF 9-speed, now updated to Stellantis's 8-speed AT8/EAT8). Adopting the Fiat unit saved massive re-engineering costs that would have been required to adapt the aging PSA DW12 architecture to modern torque converter automatics across the fleet.
Mis pruebas:
Traveller Compact Active BlueHDI 150 CV en el mundo real
https://spacetourerfaq.com/viewtopic.php?t=323
5000 kms con un Traveller
https://spacetourerfaq.com/viewtopic.php?t=405
Traveller Compact Active BlueHDI 150 CV en el mundo real
https://spacetourerfaq.com/viewtopic.php?t=323
5000 kms con un Traveller
https://spacetourerfaq.com/viewtopic.php?t=405
