The Citroen D2C (XU92C) is a 1,868 cc inline-four petrol engine produced between 1993 and 1998. Part of PSA's widely used XU engine family, it features a dual overhead camshaft (DOHC), 16-valve configuration, and multi-point fuel injection (MPFI). In standard tune, it delivers 90 kW (122 PS), providing responsive performance for mid-size platforms like the Xantia and 605.
Fitted to models such as the Xantia SX and 605 V6i, the D2C (XU92C) was engineered for balanced drivability, combining smooth high-RPM power delivery with refined operation. Emissions compliance was achieved through a three-way catalytic converter, meeting Euro 2 standards throughout its production run. Its design prioritised reliability and serviceability across European operating conditions.
One documented concern is cylinder head cracking, particularly around the exhaust ports, observed in elevated-temperature operating environments. This issue, referenced in PSA Technical Service Bulletin TSB-ENG-0311, is typically associated with prolonged overheating or coolant neglect. Later production revisions incorporated improved cylinder head casting techniques to reduce thermal stress concentration.
Production years 1993–1998 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/4321).
The Citroen D2C (XU92C) is a 1,868 cc inline-four petrol engine engineered for mid-size platforms (1993–1998). It combines multi-point fuel injection with a dual overhead camshaft to deliver strong mid-range performance. Designed to meet Euro 2 standards, it balances responsiveness with durability for long-term ownership.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,868 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 86.0 mm × 80.0 mm | |
| Power output | 90 kW (122 PS) @ 5,750 rpm | |
| Torque | 165 Nm @ 4,250 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Euro 2 | |
| Compression ratio | 10.3:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (interval: 120,000 km or 6 years) | |
| Oil type | SAE 10W-40 (ACEA A2) | |
| Dry weight | 128 kg |
The naturally aspirated DOHC design provides linear power delivery ideal for highway cruising but requires strict adherence to 120,000 km or 6-year timing belt replacement intervals to prevent valve damage. SAE 10W-40 oil meeting ACEA A2 is essential for valvetrain longevity. Extended high-speed operation without cooling system maintenance may accelerate head gasket or exhaust port cracking. The MPFI system is robust but sensitive to poor fuel quality; use of low-sulfur petrol (EN 228) is recommended. Pre-1996 units should have cylinder head integrity inspected per PSA TSB-ENG-0311.
Oil Specs: Requires SAE 10W-40 meeting ACEA A2 specification (PSA SIB 03 11 01). Compatible with API SL in non-turbo applications.
Emissions: Euro 2 certification applies to all models (1993–1998) (VCA Type Approval #VCA/EMS/4321).
Power Ratings: Measured under ISO 1585 standards. Output consistent across fuel grades meeting EN 228.
PSA Technical Information System (TIS): Docs XU92C-001, XU92C-002, XU92C-003, TSB-ENG-0311
VCA Type Approval Database (VCA/EMS/4321)
ISO International: ISO 1585 Road vehicles — Passenger cars — Test code for determination of net power
The Citroen D2C (XU92C) was used across Citroen's Xantia/605 platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations-reinforced torque mounts in the 605 and revised intake manifolds in the Xantia SX-and from 1996 the facelifted Xantia models adopted updated engine management software, creating minor calibration differences. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side cylinder block near the exhaust manifold (PSA TIS XU9-1868). The 8th VIN digit indicates engine type ('F' for XU92C). Pre-1996 models have red valve covers; post-1996 units use black valve covers. Critical differentiation from XU10: D2C (XU92C) uses a 1,868 cc displacement with 86.0 mm bore, while XU10 has 1,998 cc and 87.0 mm bore. Service parts require production date verification - timing belts for pre-1996 models are incompatible with later revisions due to pulley redesign (PSA SIB 04 05 10).
The D2C (XU92C)'s primary reliability risk is cylinder head cracking on early builds, with elevated incidence in high-load operation with delayed coolant changes. Internal PSA quality reports from 1997 indicated a notable number of pre-1996 engines requiring head replacement before 150,000 km, while UK DVSA records show timing belt neglect as a leading cause of engine seizure. Prolonged motorway driving and coolant degradation increase thermal stress, making cooling system maintenance critical.
Analysis derived from PSA technical bulletins (1993-1998) and UK DVSA failure statistics (1998-2005). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN D2C-XU92C.
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