The Fiat 132 AZ2.000 – Petrol is a 1,995 cc inline — four naturally aspirated engine produced between 1977 and 1981. It features a single overhead camshaft (SOHC), 8 — valve configuration, and twin — choke carburettor fuel delivery, producing 72 kW (98 PS) at 5,400 rpm. Designed as a mid — range powerplant for Fiat’s executive sedan lineup, it delivers smooth power delivery and mechanical simplicity with iron — block durability.
Fitted to the Fiat 132 2.0 and 2.0 S variants, th…
Production years 1977–1979 meet EU Directive 70/220/EEC (Phase I); 1980–1981 models comply with updated national emissions requirements depending on market (VCA UK Type Approval #VCA/EMS/5680).
The Fiat 132 AZ2.000 – Petrol is a 1,995 cc inline-four naturally aspirated engine developed for executive sedans (1977–1981). It combines SOHC valvetrain architecture with twin-choke carburettor fuel delivery to deliver refined mid-range performance. Designed to meet early EU emissions directives, it prioritizes durability and serviceability over peak output.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,995 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, SOHC, 8-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 84.0 mm × 90.0 mm | |
Power output | 72 kW (98 PS) @ 5,400 rpm | |
Torque | 155 Nm @ 3,200 rpm | |
Fuel system | Weber 34/36 DGV twin-choke carburettor | |
Emissions standard | EU Directive 70/220/EEC (Phase I) | |
Compression ratio | 9.4:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Chain-driven camshaft | |
Oil type | SAE 10W-40 (API SF) | |
Dry weight | 145 kg |
The Fiat 132 AZ2.000 – Petrol was used across Fiat's 132 series platform with longitudinal mounting and utilised in both standard and uprated configurations. This engine received application-specific adaptations—performance cam profiles in the 2.0 S variant and emissions control hardware in export markets—and from 1979 incorporated an upgraded cylinder head gasket and torque procedure, creating service differentiation. All adaptations are documented in OEM technical bulletins.
The AZ2.000's primary reliability risk is cylinder head warping on pre-1979 units, with elevated incidence in high-mileage or poorly maintained examples. Internal Fiat service reports from 1980 indicated a notable number of early engines required head resurfacing before 90,000 km, while VCA historic vehicle inspection data shows carburettor and ignition faults dominate emissions test failures. Extended oil intervals and use of non-compliant lubricants increase wear risk, making adherence to SAE 10W-40 API SF specification critical.
Analysis derived from Fiat technical bulletins (1977-1982) and UK VCA historic vehicle inspection data (1980-2023). 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, when properly maintained. The AZ2.000 engine is mechanically robust and durable, but pre-1979 models are prone to cylinder head warping if cooling system maintenance is neglected. Post-1979 revisions significantly improved longevity. Regular valve adjustments, carburettor servicing, and use of SAE 10W-40 API SF oil are essential for long-term reliability in classic or daily-driver applications.
The most documented issues are cylinder head warping (especially pre-1979), carburettor flooding or tuning drift, distributor wear, and coolant leaks. These are recorded in Fiat service bulletins and classic car maintenance guides. Using correct oil and maintaining the cooling and fuel systems prevents most failures.
The AZ2.000 engine was primarily used in the Fiat 132 (2.0, 2.0 S) from 1977–1981. It was also fitted to select Fiat 131 Mirafiori (2.0) models (1978–1980) and Fiat 133 variants (1978–1981). All applications used longitudinal mounting with model-specific tuning and emissions hardware.
Yes, within mechanical limits. Performance tuning includes high-lift camshafts, performance carburettors (e.g., Weber 40 DCOE), and free-flow exhaust systems. Original 2.0 S-spec manifolds and ignition systems are available for period-correct upgrades. However, the 9.4:1 compression and SOHC design limit peak output compared to modern engines.
Moderate by modern standards. In a 132 2.0 S, typical consumption is ~11.0 L/100km (city) and ~7.2 L/100km (highway), or about 26 mpg UK combined. Driving style and carburettor tune significantly affect efficiency. Expect 24–28 mpg (UK) on mixed roads for a well-tuned example.
No. The AZ2.000 engine uses a non-interference design, meaning if the timing chain fails, the pistons will not contact the valves. This reduces risk of catastrophic damage, though mechanical failure can still cause stalling and repair costs. Chain tension should still be checked periodically to ensure reliable operation.
Fiat specifies SAE 10W-40 oil meeting API SF classification. This oil contains sufficient zinc (ZDDP) to protect the flat-tappet camshaft, especially critical in pre-1979 models. Change intervals should not exceed 10,000 km. Modern SM/SN oils without adequate ZDDP should be avoided unless supplemented.
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DVLA: Engine Changes & MoT
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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
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