The Peugeot KFV, also designated TU3A, is a 1,360 cc, inline‑four naturally aspirated petrol engine produced between 1988 and 1996. It features a single overhead camshaft (SOHC) with 8 valves and a carburettor fuel system, representing Peugeot's economical powertrain solution for its supermini range. This simple, robust design delivered 50 kW (68 PS) and 106 Nm of torque, prioritizing low — cost ownership and dependable urban mobility.
Fitted to models such as the 205 a…
Production years 1988–1992 meet pre-Euro standards; 1993–1996 models meet Euro 1 standards .
The Peugeot KFV (TU3A) is a 1,360 cc inline‑four naturally aspirated petrol engine engineered for superminis (1988-1996). It combines a simple SOHC 8-valve design with carburetion to deliver dependable, economical performance. Designed for Euro 1 compliance in later years, it prioritizes mechanical simplicity and low running costs over high performance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,360 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 77.0 mm × 73.0 mm | |
Power output | 50 kW (68 PS) | |
Torque | 106 Nm @ 3,000 rpm | |
Fuel system | Carburettor (Solex or Weber) | |
Emissions standard | Pre-Euro (1988-1992); Euro 1 (1993-1996) | |
Compression ratio | 9.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt‑driven camshaft | |
Oil type | API SF/SG (SAE 10W‑40) | |
Dry weight | 100 kg |
The Peugeot KFV (TU3A) was used across Peugeot's supermini platforms with transverse mounting. This engine received platform-specific adaptations-lighter ancillaries in the 205-but no major facelift revisions occurred during its production run, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
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The KFV's (TU3A) primary reliability risk is distributor drive gear wear, with elevated incidence in vehicles with neglected oil changes or using incorrect viscosity. Peugeot SIB 5018 F documents this as a known fault, while owner reports frequently cite misfires and rough running as symptoms. Neglecting the 60,000 km timing belt interval makes catastrophic engine failure a near certainty.
Analysis derived from Peugeot technical bulletins (1988-1996) and owner-reported failure data (1990-2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
Yes, the KFV is renowned for its exceptional long-term reliability and simplicity when properly maintained. Its robust, low-stress design is inherently durable. The critical factors are adhering to the 60,000 km timing belt change and addressing carburettor or ignition system wear promptly. With basic care, these engines can easily exceed 200,000 km.
The most frequent issues are distributor drive gear wear causing ignition faults (SIB 5018 F), timing belt failure if neglected, carburettor wear leading to running problems, and water pump seal failure causing coolant leaks. These are well-documented in Peugeot service bulletins and owner forums.
The KFV (TU3A) engine was primarily fitted to the Peugeot 205 (1988-1994) and the Peugeot 309 (1988-1993). It was the carburetted 1.4L petrol engine for these supermini models, providing an economical option before the widespread adoption of fuel injection.
Modest gains are possible. Fitting a performance carburettor, sports exhaust, and aggressive camshaft can yield 5-10 kW. Converting to fuel injection using parts from the TU3 is a popular upgrade. Significant power increases are impractical without forced induction, which is complex on this engine. It's better suited to reliability than high performance.
Excellent for its time. In a Peugeot 205, expect real-world figures of around 7.0 L/100km (40 mpg UK) in mixed driving and 6.0 L/100km (47 mpg UK) on the highway. The slightly heavier 309 will return similar figures, typically 7.0-7.5 L/100km (38-40 mpg UK) combined, making it a very economical choice.
Yes. The KFV is an interference engine. If the timing belt breaks or slips, the pistons will collide with the open valves, causing severe and expensive damage to the cylinder head. This makes the 60,000 km timing belt replacement interval absolutely critical.
Peugeot originally specified API SF/SG grade oil, typically a 10W-40 mineral oil. A modern equivalent is an ACEA A3/B3 10W-40 semi-synthetic oil. Using a quality petrol engine oil is sufficient; there are no special low-ash requirements like on modern diesels.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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.
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