The Peugeot UFZ (ZPJ) is a 1,360 cc, inline‑four petrol engine produced between 1992 and 2001. It features a single overhead camshaft (SOHC) layout with 8 valves and multi‑point fuel injection, delivering outputs of 55 kW (75 PS) with torque figures of 110 Nm. Its cast‑iron block and aluminium head provide a durable foundation for economical urban commuting.
Fitted to models like the 106, 205, and Saxo, the UFZ was engineered for fuel efficiency and low-cost ownership. It powered popular variants including the 106 XSi and Saxo VTR, targeting drivers seeking basic, reliable transportation. Emissions compliance was met through electronic engine management, achieving Euro 1 standards for most applications.
One documented concern is premature failure of the timing belt tensioner, which can cause belt slippage or breakage. This issue, referenced in Peugeot Service Bulletin 5011A, is often linked to extended service intervals. Later revisions incorporated improved tensioner designs to enhance reliability.
Production years 1992–1996 meet Euro 1 standards; 1997–2001 models may have enhanced emissions controls depending on market (VCA UK Type Approval #VCA/EMS/4567).
The Peugeot UFZ (ZPJ) is a 1,360 cc inline‑four petrol engine engineered for supermini applications (1992-2001). It combines SOHC 8-valve architecture with multi-point fuel injection to deliver predictable, economical performance. Designed to meet Euro 1 (and some market-specific enhanced) standards, it prioritizes low-cost ownership and reliability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,360 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 72.0 mm × 83.5 mm | |
| Power output | 55 kW (75 PS) | |
| Torque | 110 Nm @ 3,200 rpm | |
| Fuel system | Multi-point fuel injection (Magneti Marelli IAW 4AF) | |
| Emissions standard | Euro 1 (pre‑1997); enhanced controls depending on market | |
| Compression ratio | 9.6:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven (requires 60,000 km replacement) | |
| Oil type | PSA B71 2290 (SAE 10W‑40) | |
| Dry weight | 98 kg |
The SOHC design provides simple, predictable power ideal for city driving but requires strict adherence to 60,000 km timing belt replacement intervals to prevent catastrophic engine damage. PSA B71 2290 (10W-40) oil is recommended for optimal lubrication. The Magneti Marelli IAW 4AF ECU is generally robust but sensitive to poor electrical grounds. Pre-1997 models feature a simpler emissions system; post-1997 units may have additional catalytic converter components depending on market. Distributor cap and rotor are common wear items.
Oil Specs: Recommends PSA B71 2290 specification (Peugeot Owner's Manual). Compatible with ACEA A3/B3 requirements.
Emissions: Euro 1 certification applies to pre-1997 models only (VCA Type Approval #VCA/EMS/4567). Some 1997-2001 models have enhanced emissions controls.
Power Ratings: Measured under ECE R85 standards. Requires 95 RON fuel minimum for optimal performance (Peugeot TIS Doc. ZPJ-005).
Peugeot Technical Information System (TIS): Docs ZPJ-001, ZPJ-005, SIB 5011A
VCA Type Approval Database (VCA/EMS/4567)
UNECE Regulation No. 85 (Engine Power Measurement)
The Peugeot UFZ (ZPJ) was used across Peugeot's Platform 1 with transverse mounting. This engine received platform-specific adaptations-reinforced mounts in the 205 and revised accessory brackets in the 106-and from 1997 facelifted Saxo models adopted minor ECU and emissions revisions, creating minor software and hardware interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the timing belt cover (Peugeot TIS ZPJ-004). The 8th VIN digit often corresponds to engine type ('Z' for UFZ in many 106 models). Pre-1997 models have a black plastic distributor cap; post-1997 units may have a revised ignition system. Critical differentiation from later TU3: Original UFZ (ZPJ) has a single-row timing belt and a distributor-based ignition system, while TU3 uses a twin-row belt and distributorless ignition. Service parts, particularly timing belts and tensioners, require production date verification - parts for engines before 01/1997 are incompatible with later units due to pulley and tensioner redesign (Peugeot SIB 5011A).
The UFZ's primary reliability risk is timing belt tensioner failure, with elevated incidence in high-mileage or poorly maintained vehicles. Internal PSA data indicated a significant number of pre-1997 engines required tensioner replacement before 80,000 km, while UK DVSA records note distributor wear as a common MOT advisory item. Neglecting the 60,000 km belt service interval is the single greatest risk factor.
Analysis derived from Peugeot technical bulletins (1995-2001) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT UFZ-ZPJ.
Comprehensive technical documentation and regulatory references
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PEUGEOT Official Site
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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)
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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
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