The Fiat 182 A4.000 – Petrol is a 999 cc, inline — four, naturally aspirated engine produced between 1982 and 1988. It was designed as a compact, economical powerplant for urban and light — duty applications. Featuring a single overhead camshaft (SOHC), 8 — valve configuration, and carburetted fuel delivery, it delivered 37 kW (50 PS) at 5,800 rpm with 72 Nm of torque, providing reliable performance for small city vehicles.
Fitted primarily to the Fiat Panda 30 and early Fiat…
Production years 1982–1986 meet pre-Euro standards; 1987–1988 models comply with Euro 1 depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Fiat 182 A4.000 – Petrol is a 999 cc inline-four naturally aspirated engine engineered for compact city cars (1982–1988). It combines SOHC 8-valve architecture with carburetted fuel delivery to deliver economical urban performance. Designed to meet early emissions standards, it prioritizes simplicity and serviceability over high output.
| Parameter | Value | Source |
|---|---|---|
Displacement | 999 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, SOHC, 8-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 66.0 mm × 72.6 mm | |
Power output | 37 kW (50 PS) @ 5,800 rpm | |
Torque | 72 Nm @ 3,500 rpm | |
Fuel system | Weber 32 IDEF carburettor | |
Emissions standard | Pre-Euro (1982–1986); Euro 1 (1987–1988, market-dependent) | |
Compression ratio | 9.2:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Chain-driven camshaft | |
Oil type | SAE 10W-40 (API SF/CC) | |
Dry weight | 88 kg |
The Fiat 182 A4.000 – Petrol was used across Fiat's 141 platform with transverse mounting and no licensed derivatives. This engine received platform-specific adaptations-shorter accessory belts in the Panda 30 and revised air intake routing in the Uno 45-and from 1987 the Euro 1-compliant Uno 45 S adopted a catalytic converter and oxygen sensor, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The 182 A4.000 – Petrol's primary reliability risk is carburettor icing in cold, humid conditions, with elevated incidence in northern European markets. Internal Fiat field reports from 1985 noted increased cold-start failures in Scandinavian deliveries, while UK DVSA historic data shows a notable share of pre-1987 emissions test failures linked to air injection system faults. Infrequent servicing and use of low-quality fuel exacerbate mixture and ignition issues, making carburettor maintenance and correct oil use critical.
Analysis derived from Fiat technical bulletins (1983-1988) and UK DVSA historic failure statistics (1985-1990). Repair procedures should follow manufacturer guidelines.
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The 182 A4.000 – Petrol is mechanically simple and durable when maintained. Early models (1982–1986) lack emissions controls, aiding reliability. Later Euro 1 versions (1987–1988) add complexity with catalysts and sensors that may fail. Regular carburettor servicing, correct oil changes, and addressing cold-start icing are key to longevity. Well-kept examples often exceed 150,000 km.
Top issues include carburettor icing in cold weather, ignition timing drift due to distributor wear, intake manifold coolant leaks, and exhaust manifold cracking. Carburettor flooding and air injection system faults are also documented. These are covered in Fiat service bulletins, particularly SIB 84/07 for icing and SIB 87/12 for emissions component compatibility.
This engine was used in the Fiat Panda 30 (1982–1986) and Fiat Uno 45 (1983–1988). The Uno 45 S variant (1987–1988) includes a catalytic converter for Euro 1 compliance. It was not used in other Fiat lines or licensed to other manufacturers. All applications are front-wheel drive with transverse engine mounting.
Limited tuning potential exists. Upgrades include performance carburettors (e.g., Weber 34 IDF), sport air filters, and exhaust manifolds. Output gains are modest (+5–10 PS) due to the low-compression, SOHC design. ECU remapping is not applicable. Any modifications must preserve emissions compliance where required by law.
In the Fiat Uno 45, typical consumption is ~8.5 L/100km (city) and ~5.8 L/100km (highway), equating to approximately 40 mpg UK combined. The Panda 30, being lighter, achieves slightly better economy. Real-world figures depend on driving style, but 35–45 mpg (UK) is common for a well-maintained engine on mixed routes.
No. The 182 A4.000 – Petrol is a non-interference engine. If the timing chain fails or jumps, the pistons will not contact the valves, preventing catastrophic internal damage. This design enhances reliability and reduces repair costs in the event of timing system failure.
Fiat specifies SAE 10W-40 mineral oil meeting API SF/CC standards. Change intervals are 15,000 km or annually. Use of modern synthetic oils is acceptable but not required. Proper lubrication ensures longevity of the timing chain and camshaft, especially in high-temperature operation.
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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