The Peugeot XL3S is a 1,294 cc, inline‑three petrol engine produced between 1986 and 1992. It features a cast iron block, aluminium head, and single overhead camshaft (SOHC) with 6 valves. This naturally aspirated unit delivered 50 kW (68 PS) and 102 Nm of torque, offering a balance of urban agility and fuel-efficient cruising for its era.
Fitted to models such as the Peugeot 205 and Citroën AX, the XL3S was engineered for economical, low-maintenance driving in compact hatchbacks. Its design prioritised simplicity and cost-effectiveness. Emissions compliance for most units was achieved to meet Euro 1 standards through single-point fuel injection and catalytic converter technology.
One documented concern is premature wear of the timing belt tensioner pulley, which can lead to belt slippage or failure, as noted in Peugeot Technical Note 8609 A. This wear is often attributed to bearing fatigue and inadequate lubrication under high-temperature conditions.
Peugeot
Production years 1986–1992 meet Euro 1 standards (VCA UK Type Approval #VCA/EMS/3033).
The Peugeot XL3S is a 1,294 cc inline‑three naturally aspirated petrol engine engineered for compact hatchbacks (1986-1992). It combines single-point fuel injection with SOHC 6-valve architecture to deliver adequate low-to-mid range performance. Designed to meet Euro 1 standards, it prioritises urban agility and fuel economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,294 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑3, SOHC, 6‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 75.0 mm × 73.0 mm | |
| Power output | 50 kW (68 PS) @ 5,800 rpm | |
| Torque | 102 Nm @ 3,400 rpm | |
| Fuel system | Bosch Mono-Jetronic single-point injection | |
| Emissions standard | Euro 1 | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven (requires periodic replacement) | |
| Oil type | PSA B71 2290 (SAE 10W‑40) | |
| Dry weight | 98 kg |
The SOHC 6-valve design provides adequate throttle response for city driving but requires strict adherence to 60,000 km timing belt replacement intervals to prevent catastrophic failure. Using oil meeting PSA B71 2290 specification is recommended for engine longevity. The Bosch Mono-Jetronic system is generally robust but sensitive to low-quality fuel and faulty sensors. The timing belt tensioner pulley is a critical wear item and should be replaced preventatively with the belt.
Oil Specs: Requires PSA B71 2290 specification oil (Peugeot Service Manual 8609). ACEA A2/B2 is the minimum acceptable standard.
Emissions: Euro 1 certification applies to all production years (VCA Type Approval #VCA/EMS/3033).
Power Ratings: Measured under ISO 1585 standards. Output is consistent across model applications (Peugeot Group PT-1988).
Peugeot Technical Information System: Docs 8609, 8609 A
VCA Type Approval Database (VCA/EMS/3033)
ISO 1585: Road vehicles — Engine test code — Net power
The Peugeot XL3S was used across PSA Group's PF1 platform with transverse mounting and shared with Citroën. This engine received minor ECU mapping variations between models-for instance, slightly different idle settings in the 205 versus the AX-but core mechanical components remain interchangeable. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, just below the exhaust manifold (Peugeot TIS Doc. 8609). The 8th VIN digit typically corresponds to the engine type ('S' for XL3S in many PSA applications). Visually, it can be identified by its black plastic cam cover with "XL3" embossed on it. Critical differentiation from the earlier XL3 engine: The XL3S features single-point fuel injection (Mono-Jetronic) instead of a carburettor, identifiable by the throttle body and ECU. Service parts for the fuel system are specific to the XL3S.
The XL3S's primary reliability risk is timing belt tensioner pulley failure, with elevated incidence in high-mileage engines. Peugeot Technical Note 8609 A documents this issue, while general owner feedback highlights distributor cap and rotor wear as a common cause of ignition problems. Neglecting preventative maintenance on the ignition and timing systems makes adherence to the service schedule critical.
Analysis derived from Peugeot technical bulletins (1986-1992) and general owner-reported failure data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT XL3S.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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