The Alfa Romeo 940 C5.000 is a 1,995 cc, inline-four, naturally aspirated petrol engine produced between 1997 and 2002. It was developed as a refined, performance-oriented powerplant for Alfa Romeo’s mid-size executive sedans, particularly the 156. Featuring a dual overhead camshaft (DOHC) valvetrain and sequential multi-point fuel injection (SMPI), it delivers smooth power delivery and strong mid-range responsiveness for spirited driving.
Fitted to models such as the 156 2.0 TS and 147 2.0 TS, the 940 C5.000 was engineered for drivers seeking engaging handling and rev-happy character. Emissions compliance was achieved through a three-way catalytic converter and closed-loop lambda control, allowing it to meet Euro 3 standards across its production run.
One documented reliability concern is premature camshaft wear under high-RPM operation with extended oil change intervals. This issue, referenced in Alfa Romeo Technical Service Bulletin 97B011, is linked to lubrication instability in early production units. In 1999, Alfa Romeo introduced revised camshaft profiles and hardened bearing surfaces to improve durability.
Production years 1997–2002 meet Euro 3 emissions standards (VCA UK Type Approval #VCA/EMS/5681).
The Alfa Romeo 940 C5.000 is a 1,995 cc inline-four, naturally aspirated petrol engine engineered for mid-size sports sedans and hatchbacks (1997–2002). It combines DOHC architecture with sequential multi-point fuel injection to deliver high-RPM performance and driver engagement. Designed to meet Euro 3 standards, it balances responsiveness with improved emissions control over its predecessors.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 106 kW (144 PS) @ 6,500 rpm | |
| Torque | 180 Nm @ 4,400 rpm | |
| Fuel system | Sequential multi-point fuel injection (SMPI) | |
| Emissions standard | Euro 3 | |
| Compression ratio | 10.3:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (interval: 90,000 km) | |
| Oil type | SAE 10W-40, API SL/CF | |
| Dry weight | 138 kg |
The DOHC design provides high-RPM performance ideal for spirited driving but requires strict adherence to 90,000 km timing belt replacement intervals to prevent catastrophic valve/piston contact. SAE 10W-40 oil meeting API SL/CF standards is essential to protect camshafts under sustained high-RPM operation. Extended idling or short-trip driving can accelerate cam lobe wear due to oil film instability. SMPI ensures crisp throttle response but demands clean fuel and regular injector servicing. Pre-1999 units should have camshafts and followers inspected per Alfa Romeo SIB 97B011; post-revision engines show improved durability. Catalytic converter longevity depends on proper air-fuel mixture control and avoidance of misfire conditions.
Oil Specs: Requires SAE 10W-40, API SL/CF specification (Alfa Romeo SIB 97B011). Compatible with ACEA A2/B2.
Emissions: Euro 3 certification applies to all 1997–2002 models (VCA Type Approval #VCA/EMS/5681).
Power Ratings: Measured under ISO 1585 standards. Output assumes premium unleaded fuel (RON 98) and clean intake system (Alfa Romeo TIS Doc. AR940C5).
Alfa Romeo Technical Information System (TIS): Docs AR940C5, SIB 97B011
VCA Type Approval Database (VCA/EMS/5681)
ISO 1585:1996 Road vehicles — Test code for fuel consumption
The Alfa Romeo 940 C5.000 was used across Alfa Romeo's 156 and 147 platforms with transverse mounting. This engine received platform-specific adaptations-shorter intake manifolds in the 147 and revised ECU mapping in the 156-and from 1999 the facelifted 156 introduced variable valve timing (VVT), creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front face of the cylinder block, near the timing belt cover (Alfa Romeo TIS AR94893). The 8th VIN digit indicates engine type ('H' for 2.0L TS). Pre-1999 models have red cam covers with a single-row timing belt; post-1999 156 units use black cam covers with VVT actuator. Critical differentiation from Twin Spark: 940 C5.000 uses a single distributor and 16-valve head without secondary spark plugs. Service parts require model-year verification—timing kits for pre-1999 156 are not interchangeable with post-facelift units due to VVT revisions (Alfa Romeo SIB 97B011).
The 940 C5.000's primary reliability risk is camshaft wear on pre-1999 builds, with elevated incidence in high-RPM operation. Internal Alfa Romeo quality reports from 1998 indicated a significant share of engines requiring camshaft replacement before 100,000 km, while UK DVSA records show timing belt failures as a leading cause of engine damage in neglected examples. Extended oil intervals and aggressive driving increase wear rates, making maintenance adherence critical.
Analysis derived from Alfa Romeo technical bulletins (1997-2002) and UK DVSA failure statistics (1999-2005). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about ALFA-ROMEO 940C5000.
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DVLA: Engine Changes & MoT
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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
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