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, the AZ2.000 was engineered for balanced performance and long-distance comfort. It utilised a cast-iron engine block with an aluminium cylinder head and was paired with a 4-speed manual or 3-speed automatic transmission. Emissions compliance was achieved through an exhaust gas recirculation (EGR) system and thermal reactor, enabling adherence to early EU emissions standards (Euro 0/Phase I) across European markets.
One documented service concern involves cylinder head warping observed in high-mileage units, particularly under sustained high-load operation or inadequate cooling maintenance. This issue was addressed in Fiat Technical Bulletin TB-ME-021 (1979), which recommended revised cylinder head torque procedures and specified use of an upgraded multi-layer steel (MLS) gasket to improve thermal stability and sealing integrity.
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 SOHC carburetted design offers predictable throttle response but requires periodic adjustment of the twin-choke carburettor to maintain drivability. SAE 10W-40 API SF oil is essential for camshaft and valve train protection, particularly under sustained load. Regular valve clearance checks (every 20,000 km) prevent noise and power loss. The cylinder head is prone to warping under thermal stress; post-1979 models benefit from an upgraded MLS gasket and revised torque sequence per TB-ME-021. Thermal reactor and EGR systems must remain intact for compliance in regulated markets. Coolant system maintenance—including thermostat and radiator inspection—is critical to prevent overheating and head distortion.
Oil Specs: Requires SAE 10W-40 API SF specification (Fiat TB-ME-021). Zinc content critical for flat-tappet cam protection.
Emissions: EU Directive 70/220/EEC Phase I applies to 1977–1979 models (VCA Type Approval #VCA/EMS/5680). Post-1979 units meet national Italian and German standards.
Power Ratings: Measured under UN ECE Regulation 85. Output varies slightly with carburettor calibration and altitude (Fiat TIS M132-ENG-03).
Fiat Technical Information System (TIS): Docs M132-ENG-03, M132-FUEL-05, TB-ME-021
VCA Type Approval Database (VCA/EMS/5680)
UN ECE Regulation 85: Measurement of Power of Engine Types
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.
Locate the engine number stamped horizontally on the right-side engine block near the transmission bellhousing (Fiat TIS M132-ID-11). The fifth character of the VIN indicates engine type ('A' for AZ2.000 series). Pre-1979 models have chrome valve covers with Weber carburettor; post-1979 units use black valve covers with updated gasket. Critical differentiation from 1.6L variants: AZ2.000 has 84 mm bore (measurable via spark plug hole) and uses a larger intake manifold. Service parts require model-year verification—head gaskets before 09/1979 are incompatible with later units due to MLS upgrade (Fiat TB-ME-021).
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.
Find answers to most commonly asked questions about FIAT 132-AZ2-000.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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