PSA EW/DW engine
| Company type | Engine series |
|---|---|
| Industry | Automotive |
| Predecessor | PSA XU engine |
| Founded | 1998 |
| Founder | PSA Group |
| Products | Inline-four petrol and diesel engines |
The PSA EW/DW engine series consists of inline-four petrol and diesel power units manufactured by the PSA Group since 1998, designed for installation in their Peugeot and Citroën automobile ranges. Serving as the successor to the PSA XU engine, these EW/DW engines utilize lighter construction materials while preserving critical elements such as the crankshaft from the XU lineage.
The petrol variants, identified by the EW code, cover displacements from to cc and feature DOHC multivalve technology. These engines are predominantly installed in large family sedans, executive cars, and sizable MPVs. Notably, the 2.0 L version is also employed in sporty hot hatch models.
Diesel units under the DW label originally had SOHC 2-valve per cylinder layouts with displacements between and cc. In 2000, PSA upgraded the lineup with a 2.2 L DOHC four-valve per cylinder version introduced on vehicles like the Citroën C5 and Peugeot 607. Turbocharged DW diesels incorporate common rail direct injection marketed as HDi. The DW10 diesel engine formed the basis of a collaboration with Ford Motor Company, integrating second-generation common rail systems and adding variable-geometry turbochargers on the 2.0 L platform.
DW8
The DW8 represents a development derived from the XUD9 engine and stands as the only non-turbocharged, non-common-rail diesel within this family. It was mainly applied in commercial vans such as the Citroën Berlingo and Peugeot Partner, and also appeared in economical trims of Peugeot 206 and 306 models. Production ceased in 2007 due to failure to meet Euro 4 emissions standards (it complies with Euro 3). This engine is paired with the BE five-speed manual transmission, delivering torque. In Toyota vehicles, it is designated as the 1WZ engine.
Technical Details
Displacement:
Valvetrain: 8 valves, single overhead cam
Bore x Stroke:
Compression Ratio: 23.0:1
Power Output:
Torque: at 2500 rpm
Production Commencement: 1 June 2000
| Model | Power | Remarks | Applications |
|---|---|---|---|
| DW8 (WJZ) | 69 PS (51 kW; 68 hp) | Equipped with diesel catalyst | Citroën Berlingo, Jumpy I & II (up to OPR 09064); Peugeot 206, 306 mk2, Partner, Expert I & II (up to OPR 09064) |
| DW8 B (WJX) | Used in Citroën C15 | ||
| DW8 B (WJY) | Installed in Citroën Berlingo, Jumpy I & II (from OPR 09065), Xsara; Peugeot 206, 306 mk2, Partner, Expert I & II (from OPR 09065) | ||
| Toyota 1WZ | 69 PS (51 kW; 68 hp) at 4600 rpm / 125 N⋅m (92 lb⋅ft) at 2500 rpm | 2000–2001 8th Generation Toyota Corolla (Europe) |
DW10
The DW10 is a 2.0 L diesel engine marking PSA's initial adoption of common rail direct injection technology under the HDi brand. Featuring a bore and stroke of , its displacement measures . This engine replaced the XUD9 starting in 1999. Early versions produced , equipped with two valves per cylinder and a turbocharger without an intercooler; subsequent enhancements included an intercooler that raised output to .
Initially deployed in mid-sized vehicles such as the Citroën Xsara, Citroën Xantia, Peugeot 306, Peugeot 406, and Peugeot 206, its application later broadened across PSA’s portfolio including light commercial vehicles. A high-performance RHW variant featuring sixteen valves and producing powered large MPVs developed jointly with Fiat. Suzuki incorporated this engine into its European models like the Vitara, Grand Vitara, and XL-7. The Eurovan range—Citroën Jumpy, Peugeot Expert, and Fiat Scudo—utilized an intercooled DW10 BTED variant derived from this design.
This engine platform also underpinned the co-developed Ford Duratorq engine series created alongside Ford and Volvo, powering vehicles including Ford Focus, Kuga, Mondeo Mk3 & Mk4, C-Max, as well as Volvo C30/S40/V50/C70 models alongside various Citroën and Peugeot cars. The DOHC sixteen-valve versions feature second-generation common rail injection combined with variable-geometry turbochargers, achieving outputs up to (RHR). Transmission options include six-speed manual gearboxes or six-speed Aisin automatics introduced from mid-2004 in models such as the Citroën C5.
Versions compliant with Euro 5 emissions standards—DW10BTED4E5 and DW10C—remain available within Europe. The Euro 6 compliant DW10FC and DW10FD variants introduced selective catalytic reduction technology beginning in 2014.
In Toyota-badged models like their rebadged Citroën Jumpy, this powerplant is identified as the 4WZ.
| Model | Power Output | Comments |
|---|---|---|
| DW10 ATED / RHS | 107 PS (79 kW) | Common rail turbo-diesel with catalyst + FAP |
| DW10 TD / RHY | 90 PS (66 kW) | Common rail turbo-diesel without intercooler catalyst |
| DW10 BTED / RHX | 95 PS (70 kW) | |
| DW10 ATED / RHZ | 109 PS (80 kW) | Common rail turbo-diesel with intercooler catalyst |
| DW10 ATED4 / RHW | 109 PS (80 kW) | rowspan=6 Common rail turbo-diesel with sixteen valves and catalyst |
| DW10 UTED4 / RHK | 120 PS (88 kW) | |
| DW10 BTED4 (E5) / RHR | 141 PS (104 kW) | |
| DW10 BTED4 / RHF | 140 PS (100 kW) | |
| "DW10 C" RHE/ RHH / RHC (HYbrid4) | RHE: 152[convert: needs unit name], RHH: 165[convert: needs unit name] PS | |
| "DW10 CD" AHZ | 130[convert: needs unit name] PS | |
| "DW10 FE / AH01" (Citroën Jumpy derivatives) | 120[convert: needs unit name] PS | rowspan=4 Common rail turbo-diesel SCR catalyst |
| "DW10 FD" 100KW / AH01 | 135[convert: needs unit name] PS | |
| "DW10 FD" / AH01 | 150[convert: needs unit name] PS | |
| "DW10 FC" / AH01, AH02 | 180[convert: needs unit name] PS |
DW12
The DW12 is a engine characterized by a bore and stroke, equipped with 16 valves since its introduction in 2000 on the Citroën C5, Peugeot 406, 406 Coupe, and Peugeot 607—mainly utilized in larger vehicles. It became part of the PSA/Ford lineup in 2006, delivering . Peugeot made it available as an option for the Peugeot 407 and the updated 607, positioned between the 2.0 DW10 and 2.7 DT17 engines.
This engine powered various Land Rover vehicles such as the Freelander 2, Discovery Sport, and Range Rover Evoque. It also featured in the Peugeot 4007 and Citroën C-Crosser, offering outputs of either 160 PS or 190 PS. Jaguar utilized a longitudinally mounted DW12 in the XF from 2012 to 2015, available in power levels of 163 PS or 200 PS, with some early 2012 models rated at 190 PS. Additionally, a unique 2.2 L Ford ZSD-422 version was employed in Citroën and Peugeot light commercial vehicles.
In India
The DW12 served as the foundation for significant models from Tata Motors and Mahindra and Mahindra.
- 2.2 Dicor*
Tata introduced the DW12 as the 2.2L Dicor engine with the launch of the 2007 Safari, later extending its use to the Safari Storme, Aria, Xenon, and Hexa until production ceased in 2020 due to Bharat Stage 6 emission standards.
- M HAWK*
Mahindra collaborated with AVL to redesign the DW12 into the M HAWK engine family, debuting in 2009 on the Mahindra Scorpio featuring CRDi and VGT technologies. This engine was later applied to pickups and the Xylo (2012), followed by enhanced VGT versions in the XUV500 (2011, refreshed in 2018). Mahindra upgraded the M HAWK to comply with BS6 regulations in 2020 and introduced Gen2 (4D22) in 2023 across models including the THAR, XUV700, Scorpio N, Scorpio, and THAR ROXX on a new platform.
The DW12C represents a Euro 5-compliant variant with increased performance.
| Model | Output | Notes |
|---|---|---|
| DW12 UTED | 100 PS (74 kW; 99 hp) | Common rail turbo-diesel with 8 valves used in Citroën Jumper and Peugeot Boxer vans |
| DW12 TED4 | 128–133 PS (94–98 kW; 126–131 hp) | Common rail turbo-diesel featuring 16 valves |
| DW12 BTED4 | 177 PS (130 kW; 175 hp) | |
| DW12 C | 204 PS (150 kW; 201 hp) | |
| DW12 CTED4 | 180 CV | Common rail turbo-diesel with 16 valves for Peugeot Landtrek |
The DW12 RU is an updated Euro 6d-compliant version tailored for light commercial vehicles, replacing the DW10 FU. It powers post-2019 models of Citroën Jumper and Peugeot Boxer, offering outputs of 120 PS/300 Nm, 140 PS/340 Nm, and 165 PS/370 Nm.
EW7
The EW7 engine has a bore and stroke measuring , resulting in a displacement of . It was positioned as an entry-level powerplant for vehicles such as the Citroën C5, Citroën Xsara Picasso, Peugeot 406, and Peugeot 407.
After Euro 5 emission standards took effect on January 1, 2011, the EW7—which complied only with Euro 4—was phased out in Europe, largely supplanted by the turbocharged 1.6 litre variant of the Prince engine.
| Model | Code | Output | Notes |
|---|---|---|---|
| EW7 J4 | 6FZ | 117 PS (86 kW; 115 hp) | 16-valve catalytic converter equipped |
| EW7 A | 6FY | 125 PS (92 kW; 123 hp) |
EW10
The EW10 engine features a bore and stroke of , resulting in a displacement of . It is extensively utilized throughout the PSA Group, appearing in vehicles such as the Citroën C4, Citroën C5, Citroën Xsara, Citroën Xsara Picasso, as well as the Peugeot 206, Peugeot 307, and Peugeot 407. A gasoline direct injection version, designated EW10 D and marketed under the name HPi, was briefly available in the early 2000s but was discontinued due to limited market demand.
The performance-oriented EW10 J4S variant powers models including the 206 GTI 180, 206 RC, 307 Féline, 307 cc, and C4 VTS, producing (commonly rounded to in promotional materials). The EW10 A introduced Variable Valve Timing (VVT), enhancing output to and torque to , while also improving fuel consumption. Notably, Citroën and Peugeot provide slightly different power figures for this version.
Following the implementation of Euro 5 emission standards on January 1, 2010, the EW10 engine (which complied only with Euro 4) was phased out across Europe and mainly replaced by the 1.6-litre turbocharged Prince engine#turbo.
| Model | Code | Output | Notes |
|---|---|---|---|
| EW10 D | RLZ | 140 PS (100 kW) | Gasoline direct injection catalyst |
| EW10 J4 | RFN | 136 PS (100 kW) | 16-valve catalyst |
| EW10 J4 | RFR | 135 PS (99 kW) | |
| EW10 J4S | RFK | 177 PS (130 kW) | 16-valve VVT catalyst |
| EW10 A | RFJ | 143 PS (105 kW) |
EW12
The EW12 engine succeeded the low-pressure turbocharged variant of the XU10 series, with a bore and stroke measuring , yielding a displacement of . Citroën employed this engine exclusively in the Citroën C8 MPV, whereas Peugeot installed it in sportier vehicles such as the Peugeot 406 SRi and Coupe, Peugeot 407, executive-class Peugeot 607, and MPV Peugeot 807.
Due to Euro 5 emission regulations effective from January 1, 2011, the EW12 engine (limited to Euro 4 compliance) was withdrawn from the European market and replaced by the more efficient 1.6-litre turbocharged Prince engine#turbo.
| Model | Code | Output | Notes |
|---|---|---|---|
| EW12 J4 | 3FZ | 158 PS (116 kW) | 16-valve catalyst |
| EW12 J4 | 3FY | 163 PS (120 kW) |