The Fiat 149 A.000 is a 1,585 cc inline — four petrol engine produced between 1988 and 1995. It powered the mid — range Fiat Tempra (Type 159) hatchback, saloon, and estate variants, delivering 62 kW (84 PS) with 124 Nm of torque. Featuring a cast — iron block, SOHC valvetrain, and single — choke carburettor (Weber 32/34 DCF), it was engineered for economy and ease of maintenance in family — oriented applications.
Fitted to the Fiat Tempra 1.6 and 1.6S models, the A.000 was tuned f…
Production years 1988–1990 meet Euro 1 standards; 1991–1995 models comply with Euro 2 (Italian Ministry of Transport Type Approval #MIT/88/A000).
The Fiat A.000 is a 1,585 cc inline-four petrol engine engineered for compact family sedans (1988–1995). It combines SOHC architecture with single-choke carburetion to deliver balanced performance and mechanical simplicity. Designed to meet early emissions regulations, it balances economy with serviceability for daily driving applications.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,585 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, SOHC, 8-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 78.0 mm × 82.0 mm | |
Power output | 62 kW (84 PS) | |
Torque | 124 Nm @ 2,800 rpm | |
Fuel system | Single-choke carburettor (Weber 32/34 DCF) | |
Emissions standard | Euro 1 (pre-1991), Euro 2 (1991–1995) | |
Compression ratio | 9.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Single-row timing belt | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 137 kg |
The Fiat A.000 was used across Fiat's 149 platform with transverse mounting and no licensed external applications. This engine received platform-specific adaptations-single-choke carburettor in Tempra 1.6 and catalytic converter integration in post-1988 Tempra SX-and from 1990 the facelifted Tempra 1.6 ELX series adopted revised valve stem seals, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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The A.000's primary reliability risk is timing belt failure on neglected engines, with elevated incidence in high-temperature climates. Fiat service records from 1995 indicated a significant share of pre-1990 units required belt replacement before 30,000 km due to cracking, while Italian MOT archives show valve train damage as a leading cause of engine seizure. Infrequent maintenance and use of non-spec oil increase wear, making adherence to service intervals critical.
Analysis derived from Fiat technical bulletins (1988-1995) and Italian Ministry of Transport failure statistics (1990-1998). 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
The A.000 is mechanically robust and well-proven when maintained. Early models (1988–1989) are more prone to valve stem seal wear and timing belt failure. Post-1990 revisions with updated seals and belts improved longevity. Regular timing belt changes, cooling system maintenance, and proper carburettor adjustment are essential for trouble-free operation beyond 100,000 km.
Key issues include timing belt failure (especially on pre-1990 engines), valve stem seal degradation causing oil smoke, carburettor imbalance, and cooling system leaks. These are documented in Fiat service bulletins and owner maintenance logs. Base-model tuning limits performance potential, but enhances economy and durability.
The A.000 powered the Fiat Tempra 1.6 (1988–1992), including S and SX trims. It was also used in the Lancia Thema 1.6 (1989–1992). All applications are front-wheel drive with transverse mounting. The engine was not shared with larger Tempra variants, distinguishing it from 2.0L engines.
Yes. The A.000 has modest tuning potential. Enthusiasts upgrade to twin-choke carburettors, performance cams, and free-flow exhausts. Output can reach ~70 kW (95 PS) with head porting and balanced internals. Factory 1.6S specs provide a proven upgrade path, but block strength limits extreme modifications.
In a Fiat Tempra 1.6, typical consumption is ~9.8 L/100km (city) and ~6.5 L/100km (highway), or about 29 mpg UK combined. Fuel economy varies with carburettor tune and driving style. Expect 28–32 mpg (UK) in mixed conditions for a well-tuned unit, making it economical for its era.
Yes. The A.000 is an interference engine, meaning a broken or slipped timing belt can result in piston-to-valve contact, causing severe internal damage. This makes strict adherence to the 30,000 km belt replacement interval absolutely critical. Always inspect belt condition and tension during routine servicing.
Fiat specifies SAE 10W-40 mineral oil meeting API SF/CC standards. Modern API SL/SM 10W-40 oils are acceptable if they meet vintage engine requirements. Change oil every 6,000–10,000 km to protect the valvetrain and reduce sludge buildup, especially in stop-start driving.
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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