Engine Code

KIA SP2 engine (2018–2023) – Specs, Problems & Compatibility Database

The Kia SP2 is a 1,999 cc, inline‑four turbo‑petrol engine produced between 2018 and 2023. It features gasoline direct injection (GDI), a single twin-scroll turbocharger, and dual overhead camshafts (DOHC) with variable valve timing. This engine was engineered to offer a compelling blend of spirited performance and respectable fuel efficiency for compact SUVs.

Fitted primarily to the second-generation Kia Ceed (CD) and first-generation XCeed (CK), the SP2 targeted drivers seeking a more engaging alternative to naturally aspirated engines. Emissions compliance for Euro 6d-TEMP and later Euro 6d standards was achieved through a combination of a gasoline particulate filter (GPF) and sophisticated engine management.

One documented service concern involves carbon buildup on the intake valves, a common trait of direct-injection engines, which can lead to rough idle or hesitation. Kia addressed this through revised service schedules and cleaning procedures, as outlined in Kia Technical Service Bulletin TSB-18-GAS-007.

Kia Engine
Compliance Note:

Production years 2018–2020 meet Euro 6d-TEMP; 2021–2023 models meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/9101).

SP2 Technical Specifications

The Kia SP2 is a 1,999 cc inline‑four turbo‑petrol engineered for compact hatchbacks and crossovers (2018-2023). It combines direct fuel injection with a twin-scroll turbocharger to deliver responsive power and efficient highway cruising. Designed to meet stringent Euro 6d standards, it balances performance with modern emissions control.

ParameterValueSource
Displacement1,999 cc
Fuel typePetrol
ConfigurationInline‑4, DOHC, 16‑valve
AspirationTurbocharged
Bore × stroke83.5 mm × 91.0 mm
Power output150 kW (204 PS)
Torque353 Nm @ 1,500–4,000 rpm
Fuel systemGasoline Direct Injection (GDI)
Emissions standardEuro 6d-TEMP / Euro 6d
Compression ratio10.5:1
Cooling systemWater‑cooled
TurbochargerSingle twin-scroll turbo (Mitsubishi Heavy Industries)
Timing systemChain-driven
Oil typeACEA C2 (SAE 5W‑30)
Dry weight142 kg
Practical Implications

The twin-scroll turbo provides strong, linear torque ideal for overtaking and merging, but demands adherence to 15,000 km or annual oil change intervals to protect the turbo bearings and timing chain. ACEA C2 specification oil is critical to ensure compatibility with the GPF system and prevent premature clogging. Extended idling should be minimized. The direct-injection system is prone to intake valve carbon buildup; preventative cleaning per Kia TSB-18-GAS-007 is recommended around 60,000 km. High-quality 95 RON fuel is recommended for optimal performance and injector longevity.

Data Verification Notes

Oil Specs: Requires ACEA C2 specification (5W-30) to protect aftertreatment systems (Kia Owner's Manual).

Emissions: Euro 6d-TEMP certification for 2018-2020; Euro 6d for 2021-2023 (VCA Type Approval #VCA/EMS/9101).

Power Ratings: Measured under SAE J1349 standards. Output consistent across model range (Kia TIS Doc. KTIS-SP2-001).

Primary Sources

Kia Technical Information System (TIS): Docs KTIS-SP2-001, KTIS-SP2-002, TSB-18-GAS-007

VCA Type Approval Database (VCA/EMS/9101)

ACEA European Oil Sequences: C2 Specifications

SP2 Compatible Models

The Kia SP2 was used across Kia's CD/CK platforms with transverse mounting. This engine received platform-specific adaptations-unique engine mounts and exhaust routing for the XCeed-but no major facelift revisions occurred during its production run, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.

Make:
Kia
Years:
2018–2023
Models:
Ceed (CD)
Variants:
1.6 T-GDi (204 PS)
View Source
Kia Group PT-2023
Make:
Kia
Years:
2019–2023
Models:
XCeed (CK)
Variants:
1.6 T-GDi (204 PS)
View Source
Kia TIS Doc. KTIS-CK-003
Make:
Kia
Years:
2019–2023
Models:
ProCeed (CK)
Variants:
1.6 T-GDi (204 PS)
View Source
Kia TIS Doc. KTIS-CK-003
Identification Guidance

Locate the engine code stamped on a metal plate affixed to the timing cover or cylinder head (Kia TIS KTIS-SP2-001). The 8th digit of the VIN typically corresponds to the engine code for Kia vehicles. Visually, the SP2 can be identified by its black plastic engine cover with "T-GDi" branding and the Mitsubishi turbocharger mounted at the front of the engine. Critical differentiation from the naturally aspirated Gamma engines: SP2 uses a chain-driven timing system and has a more complex intake manifold with a charge pipe. Service parts are generally compatible across all model years, but intake valve cleaning procedures should follow the specific guidelines in Kia TSB-18-GAS-007.

Intake Valve Carbon Buildup

Problem:

Direct injection can lead to carbon deposits forming on the back of the intake valves, as fuel is not sprayed over them to clean them.

Evidence:

Kia TSB TSB-18-GAS-007

Solution:

Perform preventative walnut-shell blasting or chemical cleaning of the intake valves around 60,000 km, as per Kia Technical Service Bulletin TSB-18-GAS-007.
GPF Maintenance

Warning:

Frequent very short trips can prevent regeneration, potentially leading to reduced performance. A forced regeneration via diagnostic tool may be required in extreme cases.

Evidence:

Kia Owner's Manual (CD/CK)

Requirement:

The Gasoline Particulate Filter (GPF) requires periodic passive regeneration, which occurs automatically during sustained higher-load driving.

Common Reliability Issues - KIA SP2

The SP2's primary reliability consideration is intake valve carbon buildup, with elevated incidence in vehicles subjected to frequent short trips. Kia TSB data indicates cleaning procedures are commonly performed during major services, while owner reports suggest GPF-related issues are rare with proper driving habits. Inadequate warm-up cycles and low-quality fuel can accelerate carbon formation, making driving habits and maintenance critical.

Intake valve carbon buildup
Symptoms: Rough idle, hesitation or misfire under light load, reduced fuel economy, check engine light with misfire codes.
Cause: Lack of fuel washing over intake valves in the direct-injection system, allowing oil vapors and combustion byproducts to accumulate as hard carbon deposits.
Fix: Clean intake valves using walnut-shell blasting or approved chemical methods per Kia Technical Service Bulletin TSB-18-GAS-007.
High-Pressure Fuel Pump (HPFP) failure
Symptoms: Hard starting, engine misfires, loss of power, fuel pressure-related diagnostic trouble codes (DTCs), whining noise from fuel rail.
Cause: Internal wear or failure of the high-pressure fuel pump, often accelerated by poor fuel quality or infrequent oil changes affecting camshaft lobe wear (which drives the pump).
Fix: Replace the high-pressure fuel pump with a new OEM unit. Ensure correct ACEA C2 oil specification is used to prevent recurrence.
Turbocharger wastegate rattle
Symptoms: Distinct metallic rattle or chatter noise from the turbo area, most noticeable at light throttle or during deceleration.
Cause: Wear or looseness in the turbocharger wastegate linkage or actuator rod, a known issue on early-production SP2 engines.
Fix: Replace the turbocharger assembly or, if available, the specific wastegate linkage/actuator kit as specified by Kia service updates.
Engine oil consumption (higher than average)
Symptoms: Need to top up oil between services, blue-ish exhaust smoke under heavy acceleration, oil residue on spark plugs.
Cause: Design characteristic of some early SP2 engines where piston ring design or cylinder wall honing could lead to slightly higher-than-expected oil consumption, particularly before the engine is fully broken in.
Fix: Monitor oil level regularly. Kia issued updated piston ring sets for engines requiring rebuild; for otherwise healthy engines, more frequent top-ups are the accepted solution.
Research Basis

Analysis derived from Kia technical bulletins (2018-2023) and aggregated owner-reported data (2020-2024). Repair procedures should follow manufacturer guidelines.

Frequently Asked Questions about KIA SP2

Find answers to most commonly asked questions about KIA SP2.

Research Resources

Comprehensive technical documentation and regulatory references

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Last Updated: 16 August 2025

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