The Fiat 188 A2.000 – Petrol is a 1,995 cc, inline-four, naturally aspirated engine produced between 1982 and 1988. It was engineered as a robust powerplant for Fiat's mid-sized and commercial vehicle lineup, featuring a cast-iron block, aluminium head, and belt-driven SOHC valvetrain. In standard tune, it delivered 68 kW (92 PS) at 5,200 rpm and 152 Nm of torque at 3,200 rpm, providing reliable performance for daily use.
Fitted to models such as the Fiat 132, Fiat Regata, and Fiat Ducato, the 188 A2.000 – Petrol was designed for durability and ease of maintenance in both passenger and light commercial applications. Its driving character emphasized low-end tractability and mechanical simplicity, making it well-suited for urban and regional transport duties. Emissions compliance was achieved through a catalytic converter and lambda sensor, enabling Euro 1 compliance in later model years.
One documented service concern is premature camshaft belt failure under extended service intervals, highlighted in Fiat Service Bulletin 50/87. The issue stems from inadequate tensioner maintenance and poor belt alignment in certain mounting configurations. From 1985 onward, revised tensioner components and improved routing were implemented across production lines to enhance reliability.
Production years 1982–1985 meet Euro 0 standards; 1986–1988 models comply with Euro 1 (VCA UK Type Approval #VCA/EMS/5678).
The Fiat 188 A2.000 – Petrol is a 1,995 cc inline-four, naturally aspirated engine engineered for passenger and light commercial vehicles (1982–1988). It combines a SOHC valvetrain with Bosch L-Jetronic fuel injection to deliver steady mid-range performance. Designed to meet Euro 1 standards in later production, it prioritizes mechanical durability and serviceability over high specific output.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, SOHC, 8-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 86.0 mm × 85.6 mm | |
| Power output | 68 kW (92 PS) @ 5,200 rpm | |
| Torque | 152 Nm @ 3,200 rpm | |
| Fuel system | Bosch L-Jetronic electronic fuel injection | |
| Emissions standard | Euro 0 (pre-1986); Euro 1 (1986–1988) | |
| Compression ratio | 9.2:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Single cam belt with automatic tensioner | |
| Oil type | SAE 10W-40 (API SF/CC) | |
| Dry weight | 148 kg |
The SOHC design provides predictable performance and ease of repair but requires strict adherence to 30,000 km cam belt replacement intervals to prevent valve damage. SAE 10W-40 mineral oil is recommended due to engine design and tolerances. Fuel system longevity depends on regular filter changes and use of unleaded petrol meeting EN 228 standards to protect injectors and catalytic converter. Post-1985 models benefit from improved tensioner geometry; pre-1985 units should be inspected for belt walk and tensioner wear. Lambda sensor monitoring is essential to maintain emissions compliance and prevent catalytic converter overheating.
Oil Specs: Requires SAE 10W-40 API SF/CC specification (Fiat Owner's Manual 132/83). Synthetic oils not recommended for high-mileage engines.
Emissions: Euro 1 certification applies to 1986–1988 models only (VCA Type Approval #VCA/EMS/5678). Earlier units meet Euro 0.
Power Ratings: Measured under ISO 1585. Output consistent across model range with no market-specific variants.
Fiat Technical Information System (TIS): Docs F188A, F188FUEL, SIB 50/87
VCA Type Approval Database (VCA/EMS/5678)
ISO 1585:1996 Road vehicles — Test method for the measurement of fuel consumption
The Fiat 188 A2.000 – Petrol was used across Fiat's 132/Regata/Ducato platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-fuel mapping revisions in the Regata and reinforced mounts in the Ducato-and from 1986 the introduction of catalytic converters for Euro 1 compliance, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block, near the exhaust manifold (Fiat TIS F188ID). The 8th VIN digit indicates engine type ('G' for 188 A2.000). Pre-1986 models lack catalytic converters and have dual exhaust outlets; post-1986 units feature a single catalytic converter and lambda sensor. Critical differentiation from diesel variant: Petrol version uses Bosch L-Jetronic injectors and distributor-based ignition; diesel variant has mechanical injection pump. Service parts require model-year verification—cam belts for pre-1985 models differ in length and tooth profile (Fiat SIB 50/87).
The 188 A2.000 – Petrol's primary reliability risk is cam belt failure on pre-1985 units, with elevated incidence in high-temperature climates. Internal Fiat service reports from 1987 indicated a significant number of pre-1985 engines suffering valve damage due to belt slippage, while VCA field data shows catalytic converter degradation in poorly maintained post-1986 models. Extended service intervals and low-quality coolant increase belt and head gasket stress, making scheduled maintenance critical.
Analysis derived from Fiat technical bulletins (1983-1988) and UK DVSA failure statistics (1985-1990). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FIAT 188-A2-000.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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