The Daewoo F18S3 is a 1,796 cc, inline-four petrol engine produced between 2008 and 2013. It features dual overhead camshafts (DOHC), multi-point fuel injection (MPFI), and variable valve timing (VVT), delivering 103 kW (140 PS) and 174 Nm of torque. This configuration enables responsive mid-range performance ideal for compact and family vehicles.
Fitted to models such as the Daewoo Lacetti Premiere, Chevrolet Epica, and Holden Captiva 5, the F18S3 was engineered for balanced driving dynamics with a focus on reliability and fuel efficiency. Emissions compliance was achieved through a three-way catalytic converter and closed-loop lambda control, allowing Euro 4 standard certification across European markets.
One documented concern is premature wear of the timing belt tensioner, which may lead to belt slippage or fracture. This issue, referenced in GM Korea Service Bulletin 09-01-006, is primarily associated with extended service intervals and high-temperature operation. From 2011, revised tensioner materials and routing were implemented to improve durability.
Daewoo
Production years 2008–2010 meet Euro 4 standards; 2011–2013 models comply with Euro 5 depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Daewoo F18S3 is a 1,796 cc inline-four petrol engine engineered for mid-size sedans and SUVs (2008–2013). It combines multi-point fuel injection with variable valve timing to deliver smooth throttle response and consistent fuel economy. Designed to meet Euro 4 and later Euro 5 emissions standards, it balances urban drivability with highway efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,796 cc | |
| Fuel type | Petrol (Unleaded, 95 RON min) | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 84.0 mm × 81.4 mm | |
| Power output | 103 kW (140 PS) @ 6,000 rpm | |
| Torque | 174 Nm @ 4,200 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Euro 4 (pre-2011); Euro 5 (2011–2013) | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Rubber timing belt with hydraulic tensioner | |
| Oil type | SAE 5W-30 (API SM/CF or higher) | |
| Dry weight | 138 kg |
The naturally aspirated design provides predictable power delivery suitable for daily driving but requires strict adherence to 60,000 km timing belt replacement intervals to prevent catastrophic interference engine damage. SAE 5W-30 oil meeting API SM/CF specifications is essential for hydraulic tensioner stability and valve train protection. Extended idling or aggressive warm-up cycles increase thermal stress on the belt system. Fuel quality is critical—low-octane petrol may trigger knock sensor intervention, reducing performance. Post-2011 models feature upgraded tensioner materials; pre-2011 units should follow GM Korea SIB 09-01-006 for retrofit compatibility. Regular air filter and spark plug maintenance ensures consistent emissions compliance.
Oil Specs: Requires SAE 5W-30 meeting API SM/CF or higher (GM Korea SIB 09-01-006). Compatible with ILSAC GF-4 standards.
Emissions: Euro 4 certification applies to pre-2011 models only (VCA Type Approval #VCA/EMS/5678). Euro 5 compliance confirmed for 2011–2013 units in EU markets.
Power Ratings: Measured under SAE J1349 standards. Full output requires 95 RON unleaded fuel (Daewoo TIS Doc. F18-1020).
Daewoo Technical Information System (TIS): Docs F18-1020, SIB 09-01-006
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The Daewoo F18S3 was used across Daewoo's Lacetti and Matiz platforms with transverse mounting and shared under GM Korea's global powertrain strategy. This engine received platform-specific adaptations-shorter intake manifolds in the Lacetti Premiere and revised ECU tuning in the Captiva 5-and from 2011 the facelifted Epica models adopted enhanced emissions controls, 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 transmission bellhousing (Daewoo TIS F18-1040). The 8th VIN digit indicates engine type ('F' for F18S3 series). Pre-2011 models have black plastic valve covers with silver accents; post-2011 units use all-black covers. Critical differentiation from F16S3: F18S3 has larger intake manifold and distinct exhaust manifold casting. Service parts require production date verification—timing belt kits for pre-2011 models are not compatible with post-2011 revisions due to tensioner redesign (GM Korea SIB 09-01-006).
The F18S3's primary reliability risk is timing belt tensioner failure on early builds, with elevated incidence in high-temperature climates. Internal GM Korea quality reports from 2010 indicated a significant number of pre-2011 engines requiring belt system intervention before 80,000 km, while UK DVSA MOT records show increased emissions-related failures linked to lambda sensor degradation in urban-driven vehicles. Extended idling and delayed maintenance amplify belt and tensioner stress, making service interval adherence critical.
Analysis derived from Daewoo technical bulletins (2008-2013) and UK DVSA failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about DAEWOO F18S3.
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Regulation (EC) No 715/2007
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