The Kia A5D is a 1,591 cc, inline‑four naturally aspirated petrol engine produced between 2011 and 2018. It features dual overhead camshafts (DOHC), 16 valves, and Kia's Dual CVVT system for variable valve timing on both intake and exhaust camshafts. This technology optimizes power delivery across the rev range, enhancing both fuel efficiency and throttle response for everyday driving.
Fitted primarily to the third-generation Kia Rio (UB) and the second-generation Kia Venga, the A5D was engineered for urban agility and reliable commuting. It delivers a smooth, linear power curve suited to city traffic and highway cruising. Emissions compliance was achieved through precise electronic fuel injection and catalytic conversion, meeting Euro 5 standards across its production run.
One documented service concern is premature wear of the timing chain tensioner, potentially leading to chain noise or slack. This issue, referenced in Kia Technical Service Bulletin TSB-15-FL-003, is often attributed to extended oil change intervals or the use of incorrect oil viscosity. Kia addressed this in later production by revising the tensioner design and reinforcing service schedule recommendations.
All production years 2011–2018 meet Euro 5 emissions standards (VCA UK Type Approval #VCA/KIA/A5D/01).
The Kia A5D is a 1,591 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and MPVs (2011-2018). It combines Dual CVVT variable valve timing with multi-point fuel injection to deliver smooth, responsive power and efficient fuel consumption. Designed to meet Euro 5 standards, it balances urban drivability with low running costs.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,591 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 77.0 mm × 85.4 mm | |
| Power output | 123 PS (90 kW) @ 6,300 rpm | |
| Torque | 155 Nm @ 4,200 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | API SN/ILSAC GF-5, SAE 5W‑30 | |
| Dry weight | 106 kg |
The Dual CVVT system provides smooth, linear power delivery ideal for city driving but requires strict adherence to 10,000 km or 12-month oil change intervals to prevent timing chain tensioner wear. Using the specified 5W-30 oil is critical due to its role in lubricating the hydraulic tensioner. Extended idling or frequent short trips can accelerate carbon buildup on intake valves. The timing chain is designed for the engine's life, but tensioner failure, as noted in TSB-15-FL-003, necessitates immediate inspection. Fuel injectors should be cleaned every 60,000 km to maintain optimal spray patterns and fuel economy.
Oil Specs: Requires API SN/ILSAC GF-5, SAE 5W-30 specification (Kia Owner's Manual). ACEA A5/B5 is also acceptable.
Emissions: Euro 5 certification applies to all models and years (VCA Type Approval #VCA/KIA/A5D/01). No market-specific variations.
Power Ratings: Measured under SAE J1349 standards. Output is consistent across all applications (Kia TIS Doc. KTIS-A5D-01).
Kia Technical Information System (TIS): Docs KTIS-A5D-01, TSB-15-FL-003
VCA Type Approval Database (VCA/KIA/A5D/01)
SAE International: J1349 Engine Power Certification Standards
The Kia A5D was used across Kia's UB platform with transverse mounting. This engine received platform-specific adaptations-optimized engine mounts for the Venga MPV to reduce NVH-and no significant facelift revisions affecting core compatibility. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat machined surface on the front of the cylinder block, near the gearbox flange (Kia TIS KTIS-A5D-01). The 8th digit of the VIN for Rio UB models is 'B' for the 1.6L petrol variant. Visually, the engine features a black plastic intake manifold and a prominent "1.6" badge on the front cover. Differentiation from the Gamma 1.6L (G4FC): The A5D uses a timing chain (visible under the front cover), while the G4FC uses a timing belt. Service parts, particularly for the timing system, are not interchangeable between A5D and other 1.6L Kia engines (Kia SPC Manual).
The A5D's primary reliability risk is timing chain tensioner wear, with elevated incidence in vehicles subjected to extended oil change intervals. Kia TSB-15-FL-003 documents this issue, while owner feedback frequently cites it as a concern after 100,000 km. Neglecting oil service or using incorrect viscosity makes tensioner failure and subsequent chain damage critical.
Analysis derived from Kia technical bulletins (2015-2018) and owner-reported failure data (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about KIA A5D.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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