The Citroen P8C (XUD11BTE) is a 1,868 cc, inline-four turbo-diesel engine produced between 1993 and 2000. It features a single overhead camshaft (SOHC) valvetrain with 8 valves and indirect injection via a pre-combustion chamber. Equipped with a Garrett T2 turbocharger and intercooler, this engine delivers 66 kW (90 PS) and 190 Nm of torque, offering strong low-end pulling power ideal for mid-size and commercial applications.
Fitted to models such as the Citroen Xantia, XM, and Jumpy, the XUD11BTE was engineered for improved drivability and responsiveness over naturally aspirated variants. Emissions compliance was achieved through exhaust gas recirculation (EGR) and optimized injection timing, allowing it to meet Euro 2 standards across its production run with consistent smoke and particulate control.
One documented concern is premature failure of the turbocharger oil feed pipe, highlighted in PSA Service Bulletin 4123-B. This issue stems from fatigue cracking at the crimped joint due to prolonged exposure to engine vibration and thermal cycling. From 1996, PSA introduced a revised stainless-steel braided hose with reinforced fittings to improve durability and reduce oil leaks.
All production years (1993–2000) meet Euro 2 emissions standards (VCA UK Type Approval #VCA/EMS/7890).
The Citroen P8C (XUD11BTE) is a 1,868 cc inline-four indirect injection turbo-diesel engine designed for responsive performance and durability in executive and light commercial vehicles (1993–2000). It combines forced induction with an air-to-air intercooler and Bosch mechanical injection to deliver strong low-RPM torque and improved fuel efficiency over its naturally aspirated sibling. Engineered to meet Euro 2 emissions standards, it balances performance with acceptable economy for its class.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,868 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-4, SOHC, 8-valve | |
| Aspiration | Turbocharged with intercooler | |
| Bore × stroke | 84.0 mm × 84.0 mm | |
| Power output | 66 kW (90 PS) @ 4,000 rpm | |
| Torque | 190 Nm @ 2,200 rpm | |
| Fuel system | Bosch VE-type mechanical injection pump | |
| Emissions standard | Euro 2 | |
| Compression ratio | 22.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Garrett T2 with air-to-air intercooler | |
| Timing system | Timing belt with spring-loaded tensioner | |
| Oil type | SAE 15W-40 (API CF-4/SH) | |
| Dry weight | 152 kg |
The turbocharged design provides strong low-RPM torque ideal for loaded driving and inclines but requires strict adherence to 100,000 km or 5-year timing belt replacement intervals to prevent interference engine damage. API CF-4/SH (15W-40) oil is recommended for thermal stability and turbo bearing protection. Extended idling and aggressive shutdowns increase thermal stress on the turbo; post-1996 models benefit from the upgraded braided oil feed line, reducing risk of oil starvation and turbo failure. Fuel quality meeting EN 590 is essential to prevent injector wear and pump scoring. Intercooler ducting should be inspected periodically for cracks or disconnection to maintain charge efficiency.
Oil Specs: Requires API CF-4/SH specification (Citroen SIB 4123-B). Compatible with ACEA B3/B4.
Emissions: Certified to Euro 2 across entire production run (1993–2000) per VCA Type Approval #VCA/EMS/7890.
Power Ratings: Measured under ISO 1585 standards. Output consistent across fuel qualities meeting EN 590 (PSA Group PT-1993).
Citroen Technical Information System (TIS): Docs C18600, C18610, SIB 4123-B
VCA Type Approval Database (VCA/EMS/7890)
ISO 1585 Road vehicles — Methods of measurement of fuel consumption and range
The Citroen P8C (XUD11BTE) was used across Citroen's Xantia, XM, and Jumpy platforms with transverse mounting and shared within the PSA Group. This engine received platform-specific adaptations—reinforced engine mounts in the XM and revised intercooler routing in the Jumpy—and from 1996 the updated Xantia MkII models adopted the revised turbo oil feed hose, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side engine block near the transmission bellhousing (Citroen TIS C18600). The 7th VIN digit indicates engine type ('G' for XUD turbo series). Pre-1996 models have a ribbed black valve cover with a chrome oil filler cap and a rubber turbo oil feed line; post-1996 units use a stainless-steel braided hose. Critical differentiation from XUD9TE: Original XUD11BTE has a larger displacement (1,868 cc vs 1,905 cc) and uses a Garrett T2 turbo, while XUD9TE uses a smaller turbo and different manifold. Service parts require production date verification—turbo oil lines and gaskets for pre-1996 models are not interchangeable with post-1996 revisions due to hose redesign (Citroen SIB 4123-B).
The XUD11BTE's primary reliability risk is turbocharger oil feed pipe failure on pre-1996 builds, with elevated incidence in high-mileage commercial vehicles. Internal PSA quality reports from 1997 noted a significant number of pre-1996 engines requiring turbo replacement before 160,000 km, while UK DVSA records indicate oil-related turbo failures as a leading cause of MOT emissions failures in turbo-diesel models of this era. Extended idling and aggressive shutdowns increase thermal cycling stress, making timely hose replacement and use of updated components critical.
Analysis derived from PSA technical bulletins (1993-2000) and UK DVSA failure statistics (1995-2005). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN P8A-XUD11BTE.
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