The Fiat 250 A1.000 is a 1,998 cc, inline — four, naturally aspirated petrol engine produced between 1999 and 2005. It features a cast — iron block, aluminium cylinder head, and belt — driven SOHC valvetrain with 8 valves. In standard tune, it produces 88 kW (120 PS) at 5,500 rpm and 170 Nm of torque at 3,500 rpm, delivering smooth performance for mid — size passenger vehicles during the early 2000s.
Fitted to core Fiat models including the Marea (185), Brava (182), and Palio Week…
All production models meet Euro 3 emissions standards (Directive 98/69/EC,.
The Fiat 250 A1.000 is a 1,998 cc inline-four, naturally aspirated petrol engine designed for compact and mid-size passenger vehicles (1999–2005). It combines SOHC valvetrain architecture with sequential multipoint fuel injection to deliver smooth, responsive performance. Designed to meet Euro 3 emissions standards, it balances drivability with improved serviceability over earlier units.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,998 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, SOHC, 8-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 87.0 mm × 83.6 mm | |
Power output | 88 kW (120 PS) @ 5,500 rpm | |
Torque | 170 Nm @ 3,500 rpm | |
Fuel system | Magneti Marelli IAW 59 sequential multipoint injection | |
Emissions standard | Euro 3 | |
Compression ratio | 9.8:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Rubber toothed belt (SOHC, front-mounted) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 142 kg |
The Fiat 250 A1.000 was used across Fiat's Marea/Brava platforms with transverse mounting and shared architecture with Lancia variants. This engine received platform-specific adaptations—reinforced mounts in the Marea and revised intake manifolds in the Palio Weekend—and from 2002 the facelifted Marea SW adopted a revised ECU mapping and secondary air injection, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 250 A1.000 is mechanically robust with a simple design, but timing belt integrity is critical. Pre-2002 models require vigilant belt maintenance due to manual tensioners. With regular oil changes, coolant service, and timely belt replacement, these engines often exceed 200,000 km. Avoid neglected examples with unknown service history.
The most frequent issues are cam belt failure (especially on pre-2002 models), lambda sensor degradation, intake carbon buildup, and coolant leaks from the thermostat housing. These are documented in Fiat service bulletins and supported by DVSA inspection data. Preventive maintenance significantly reduces failure rates.
The 250 A1.000 was used in the Fiat Marea (185), Brava (182), and Palio Weekend (178). It also powered the Lancia Lybra (840) 2.0 i.e. variant. Production spanned 1999–2005, with full Euro 3 compliance. The engine was phased out in favour of the 2.0 16V (132 kW) unit in later Marea models.
Limited tuning potential exists. Modifications such as performance camshafts, free-flow exhaust, and intake upgrades can yield modest gains (~10–15%). ECU remapping is not feasible due to the IAW 59 system's limitations. Most owners prioritise reliability over performance, keeping modifications minimal.
Real-world consumption averages 9.0–10.5 L/100km (27–31 mpg UK) in mixed driving. Highway efficiency improves to ~7.5 L/100km (~38 mpg UK). Older models with poorly maintained fuel systems may see higher consumption. Use of quality petrol meeting EN 228 helps maintain optimal economy.
Yes. The 250 A1.000 is an interference engine, meaning a broken cam belt can cause pistons to strike open valves, resulting in severe internal damage. This underscores the importance of strict adherence to the 60,000 km belt replacement interval.
Fiat specifies SAE 10W-40 engine oil meeting API SL standards. Use of quality synthetic or semi-synthetic oil is recommended, especially in high-temperature or stop-start conditions. Oil and filter should be changed every 15,000 km or 12 months to ensure engine longevity.
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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