The Fiat 836 A4.000 is a 1,998 cc, inline‑four naturally aspirated petrol engine produced between 1998 and 2006. It features a double overhead camshaft (DOHC) with 16 valves and multi — point fuel injection, delivering a refined balance of power and efficiency. In standard form it produced 103 kW (140 PS) and 186 Nm of torque, offering spirited performance for its vehicle class.
Fitted primarily to the Fiat Marea and Bravo hatchbacks, the 836 A4.000 was engineered for drive…
Production years 1998–2006 meet Euro 3 standards .
The Fiat 836 A4.000 is a 1,998 cc inline‑four naturally aspirated petrol engine engineered for mid-size hatchbacks and sedans (1998-2006). It combines multi-point fuel injection with a DOHC 16-valve valvetrain to deliver responsive, linear power. Designed to meet Euro 3 standards, it offers a sportier character while maintaining acceptable emissions for its era.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,998 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 86.4 mm × 85.0 mm | |
Power output | 103 kW (140 PS) | |
Torque | 186 Nm @ 4,000 rpm | |
Fuel system | Multi-point fuel injection (Magneti Marelli IAW) | |
Emissions standard | Euro 3 | |
Compression ratio | 10.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt-driven | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 150 kg |
The Fiat 836 A4.000 was used across Fiat's mid-size platforms with longitudinal mounting. This engine received minor ECU mapping differences for the Bravo versus the Marea, creating no significant 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
The 836 A4.000 is fundamentally robust and known for longevity, provided it is meticulously maintained. Its main weakness is the plastic intake manifold and the critical timing belt. With strict adherence to timing belt replacement, using correct oil, and replacing the intake manifold preventatively, these engines can reliably exceed 250,000 km.
The most critical issue is plastic intake manifold cracking, leading to vacuum leaks. Other common problems include timing belt failure (if neglected), ignition coil pack failure, and oil sludge buildup. These are well-documented in Fiat service bulletins.
This engine was primarily used in the Fiat Marea sedan (1998-2002) and the Fiat Bravo hatchback (1998-2001), both badged as the 2.0 20V. It was not used in Fiat's commercial vehicle platforms.
Yes, the 836 A4.000 responds well to tuning. ECU remapping can yield modest power gains (10-15 kW). Installing a performance exhaust and air filter can further improve breathing. The bottom end is robust, but aggressive tuning should be approached cautiously due to the age of components.
Fuel economy is moderate for its performance. In a Fiat Marea 20V, expect around 9.5-11.0 L/100km (26-30 mpg UK) combined, depending heavily on driving style. Highway cruising can yield around 7.8 L/100km (36 mpg UK), while spirited city driving will be higher.
Yes. The Fiat 836 A4.000 is an interference engine. If the timing belt fails, the pistons will collide with the open valves, causing severe internal damage. This makes adhering to the 60,000 km or 4-year replacement interval absolutely critical.
Fiat recommends a 10W-40 semi-synthetic or fully synthetic oil meeting ACEA A3 or API SG/SH specifications. High-quality oil is essential to prevent sludge buildup and protect the valvetrain. Change intervals should be 10,000 km or 6 months, whichever comes first.
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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