The Peugeot D8A (XUD9TE) is a 1,905 cc, inline‑four turbo‑diesel engine produced between 1992 and 1998. It features a cast-iron block, alloy cylinder head, and a single overhead camshaft (SOHC) with two valves per cylinder. In standard form, it delivered 66 kW (90 PS) and 190 Nm of torque, engineered for robust, economical performance in its era.
Fitted to models such as the 306, 405, and Partner, the D8A was designed for drivers seeking dependable, low-cost motoring with enhanced torque over its naturally aspirated siblings. Emissions compliance for its time was achieved through indirect injection and a basic turbocharger, meeting pre-Euro or early Euro 1 standards depending on market.
One documented service consideration is premature failure of the vacuum-operated turbocharger wastegate actuator, potentially leading to overboost conditions or loss of boost. This issue, referenced in Peugeot Service Bulletin 0418, is often linked to diaphragm degradation from age and exposure to engine bay heat.
Production years 1992–1998 meet early Euro 1 standards for certain markets; pre-1993 models are pre-Euro (VCA UK Type Approval not applicable for pre-1992 vehicles, consult EU Directive 91/441/EEC for 1993+).
The Peugeot D8A (XUD9TE) is a 1,905 cc inline‑four turbo‑diesel engineered for compact and light commercial models (1992-1998). It combines indirect injection with a simple SOHC valvetrain and a mechanical turbocharger to deliver enhanced torque for its class. Designed for the transitional period to Euro 1, it prioritizes mechanical durability and fuel economy.
| 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 | Indirect injection, Bosch VE rotary pump | |
| Emissions standard | Pre-Euro / Euro 1 (market-dependent) | |
| Compression ratio | 23.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single turbo, vacuum actuator (Garrett or KKK) | |
| Timing system | Belt-driven | |
| Oil type | Peugeot B71 2290 (SAE 15W‑40) | |
| Dry weight | 145 kg |
The turbocharger provides a noticeable torque boost over naturally aspirated XUD variants but requires monitoring of the vacuum actuator for signs of failure. Using 15W-40 mineral diesel engine oil is recommended. The indirect injection system is tolerant of fuel quality but benefits from clean fuel filters. The timing belt must be replaced at 80,000 km intervals to prevent catastrophic engine failure, as it is an interference design.
Oil Specs: Requires mineral 15W-40 diesel engine oil specification (Peugeot Owner's Manual 1995).
Emissions: Pre-1993 models are pre-Euro; 1993+ models comply with EU Directive 91/441/EEC (Euro 1) for applicable markets.
Power Ratings: Measured under SAE J1349 standards. Output consistent across model range (Peugeot TIS Doc. M40615).
Peugeot Technical Information System (TIS): Docs M40110, M40501, M40542, SIB 0418
EU Directive 91/441/EEC on vehicle emissions
SAE International: J1349 Engine Power Certification Standards
The Peugeot D8A (XUD9TE) was used across Peugeot's PSA platforms with transverse mounting. This engine received minor platform-specific adaptations-different turbocharger mounting brackets in the Partner versus the 306-with no major facelift revisions affecting core compatibility. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat boss on the front of the engine block, below the injection pump (Peugeot TIS M40890). The 8th VIN digit typically corresponds to the engine code ('A' for D8A). Visually, the engine features a black rocker cover and a prominent Bosch VE rotary injection pump on the front. Critical differentiation from later HDi engines: D8A uses indirect injection and a mechanical injection pump, not common-rail. The turbocharger is mounted low on the exhaust manifold.
The D8A's primary reliability risk is failure of the turbocharger wastegate actuator, with elevated incidence in high-mileage examples. Peugeot service data indicates a notable failure rate after 150,000 km, while owner reports frequently cite loss of boost or overboost conditions. Inspecting the actuator diaphragm and vacuum lines is a critical preventative measure.
Analysis derived from Peugeot technical bulletins (1994-1998) and historical service data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT D8A-XUD9TE.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with PEUGEOT or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
PEUGEOT Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialPEUGEOT documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
