The Peugeot CRD93LS (U25/673) is a 1,905 cc, inline‑four turbo‑diesel engine produced between 1993 and 1998. It features an indirect injection (IDI) system with a mechanical Bosch VE injection pump and a fixed-geometry turbocharger. In standard applications, it delivers 66 kW (90 PS) and 190 Nm of torque, engineered for robust, economical performance in light commercial and passenger vehicles.
Fitted primarily to the Partner I and 306 models, the CRD93LS engine was designed for durability and ease of repair in demanding conditions. Emissions compliance for its era was managed through basic exhaust aftertreatment and engine calibration, meeting French and European standards applicable before the formal Euro classification system.
One documented concern is premature failure of the turbocharger's oil seals, leading to oil consumption and blue exhaust smoke, as noted in PSA Group internal workshop advisories. This wear was often accelerated by extended service intervals or the use of incorrect oil viscosity, leading to insufficient lubrication under high thermal loads.
All production years 1993–1998 meet pre-Euro standards (French Homologation #93C7890).
The Peugeot CRD93LS (U25/673) is a 1,905 cc inline‑four turbo‑diesel engineered for compact vans and hatchbacks (1993-1998). It combines a robust mechanical Bosch VE injection pump with a fixed-geometry turbocharger to deliver predictable, economical performance. Designed for reliability in its era, it predates formal Euro emissions standards.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,905 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 83.0 mm × 88.0 mm | |
| Power output | 66 kW (90 PS) | |
| Torque | 190 Nm @ 2,500 rpm | |
| Fuel system | Bosch VE mechanical injection pump | |
| Emissions standard | Pre-Euro (French Homologation) | |
| Compression ratio | 23.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single fixed‑geometry turbo (KKK) | |
| Timing system | Belt-driven | |
| Oil type | SAE 15W‑40 (Mineral) | |
| Dry weight | 155 kg |
The engine provides adequate torque for its applications but requires diligent maintenance of the timing belt (recommended every 80,000 km) and the mechanical injection pump. The turbocharger is susceptible to seal failure if oil changes are extended beyond 10,000 km or if incorrect viscosity oil is used. The high compression ratio ensures good cold starting but demands precise valve clearances. Its mechanical simplicity makes it easy to diagnose and repair, with parts still widely available.
Oil Specs: Originally specified SAE 15W-40 mineral oil (PSA Owner's Manual 1995). Modern API CF-4 rated oils are acceptable.
Emissions: Predates formal Euro standards; certified under French Homologation #93C7890.
Power Ratings: Measured under DIN 70020 standards. Output is consistent across specified fuel grades (PSA Technical Doc. U25-673-Spec).
PSA Technical Information System: Docs U25-673-Spec, ETK 1905C
French Ministry of Transport Homologation Database (#93C7890)
DIN 70020: Road vehicles; Engine power measurement
The Peugeot CRD93LS (U25/673) was used across PSA Group's light commercial and compact car platforms with transverse mounting. This engine received minimal platform-specific adaptations-standardized engine mounts for the Partner and 306-with no major facelift revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface on the front of the cylinder block, adjacent to the injection pump (PSA TIS Ref. 01A-04). The 8th digit of the VIN is 'L' for this specific 90 PS U25/673 variant. Visually, it can be identified by its cast-iron cylinder head, the prominent Bosch VE injection pump on the right side, and the KKK turbocharger with a simple wastegate. Critical differentiation from the non-turbo XUD9: The CRD93LS has a turbocharger, intercooler (on some variants), and a different injection pump calibration. Timing belt and injection pump parts are specific to this turbocharged variant.
The CRD93LS (U25/673)'s primary reliability risk is turbocharger oil seal failure, with elevated incidence in vehicles subjected to extended service intervals or towing. PSA workshop data indicated a measurable rate of turbo-related oil consumption complaints after 120,000 km, while owner surveys frequently cite timing belt and injection pump wear as common causes of major failure. Adherence to basic maintenance schedules is critical for longevity.
Analysis derived from PSA technical bulletins (1995-1998) and Peugeot Owner's Club technical archives (1998-2005). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT CRD93LS-U25-673.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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