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 drivers seeking a more engaging experience than base models. Emissions compliance was met through sequential fuel injection and a three-way catalytic converter, achieving Euro 3 standards for its production period.
One documented concern is premature failure of the plastic intake manifold, which can develop cracks and vacuum leaks. This issue, highlighted in Fiat Service Information Bulletin SIB‑836‑01, is often linked to thermal cycling and material fatigue in high-mileage units.
Production years 1998–2006 meet Euro 3 standards (VCA UK Type Approval #VCA/EMS/9012).
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 | ACEA A3 (SAE 10W‑40) | |
| Dry weight | 150 kg |
The DOHC 16-valve design provides responsive, linear power ideal for spirited driving but demands strict adherence to timing belt replacement intervals to prevent catastrophic failure. ACEA A3 10W-40 oil is recommended for its high-temperature stability. The plastic intake manifold is susceptible to cracking; inspect for vacuum leaks if idle is rough. Intake manifold failure, addressed in SIB SIB-836-01, is a known risk in high-mileage applications and requires replacement with the revised metal or reinforced plastic unit.
Oil Specs: Requires ACEA A3 specification (Fiat Workshop Manual 836). API SG/SH is also acceptable.
Emissions: Euro 3 certification applies to all 1998–2006 models (VCA Type Approval #VCA/EMS/9012).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across verified applications (Fiat PT-2003).
Fiat Technical Information System: Workshop Manual 836, SIB SIB-836-01
VCA Type Approval Database (VCA/EMS/9012)
EEC Directive 80/1269/EEC - Engine Power Measurement
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.
Locate the engine code stamped on a flat boss on the front left side of the engine block, near the exhaust manifold (Fiat Workshop Manual 836). The 8th digit of the VIN typically corresponds to the engine code for Fiat passenger vehicles. Visually, it is identifiable by its cast-iron block, DOHC valve cover, and the plastic intake manifold. Critical differentiation from the 8-valve 2.0L: The 836 A4.000 has a DOHC head with two camshafts and 16 valves. Service parts for the intake manifold require verification against the specific service bulletin due to mid-production revisions.
The 836 A4.000's primary reliability risk is plastic intake manifold failure, with elevated incidence in high-mileage, heat-cycled applications. Fiat internal service data indicates this was a frequent cause of drivability complaints for this model, while its mechanical design otherwise offers good longevity. Maintaining intake system integrity and performing preventative timing belt replacement are critical.
Analysis derived from Fiat technical bulletins (1998-2006) and UK DVSA failure statistics (2002-2012). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FIAT 836-A4-000.
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