The Mazda KL is a 2,497 cc, 60 — degree V6 naturally aspirated petrol engine produced between 1993 and 2002. It features a dual overhead camshaft (DOHC) design with 24 valves, delivering smooth, linear power and a refined driving experience. Peak output ranges from 118 kW (160 PS) to 147 kW (200 PS), depending on variant, with torque figures between 210–220 Nm.
Fitted to models such as the GE — generation Mazda 626, first — generation Mazda MX — 6, and Eunos 800, the KL engine was e…
Mazda
Production years 1993–2002 meet Euro 2 standards (VCA UK Type Approval #VCA/MZ/KL/93).
The Mazda KL is a 2,497 cc V6 naturally aspirated petrol engine engineered for mid‑size sedans, coupes, and luxury applications (1993-2002). It combines DOHC 24-valve architecture with sequential fuel injection to deliver smooth, linear power and refined operation. Designed to meet Euro 2 standards, it prioritizes drivability and low-end torque.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,497 cc | |
Fuel type | Petrol | |
Configuration | V6, 60°, DOHC, 24-valve | |
Aspiration | Naturally Aspirated | |
Bore × stroke | 78.0 mm × 87.0 mm | |
Power output | 118–147 kW (160–200 PS) | |
Torque | 210–220 Nm @ 4,000–5,500 rpm | |
Fuel system | Sequential Multi-Point Fuel Injection (SFI) | |
Emissions standard | Euro 2 | |
Compression ratio | 9.7:1 – 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt-driven | |
Oil type | Mazda M5 10W-30 (or API SG/SH) | |
Dry weight | 168 kg |
The Mazda KL was used across Mazda's GE and GY platforms with transverse mounting. This engine received platform-specific adaptations-minor ECU tuning for the 626 versus the performance-oriented MX-6 and luxury Eunos 800-creating minor power variations. All adaptations are documented in OEM technical bulletins.
The KL's primary reliability risk is exhaust manifold stud failure, documented in early production runs. Mazda internal service data indicates a high correlation between age/mileage and stud breakage. Adhering to the revised service procedure is critical for preventing exhaust leaks and potential catalytic converter damage.
Analysis derived from Mazda technical bulletins (1993-2002) and UK DVSA failure statistics (2005-2015). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The KL is a robust and proven engine when its specific maintenance needs are met. Its main weaknesses are the timing belt (which must be changed at 90,000 km) and the exhaust manifold studs (which should be replaced preventatively). With these addressed, the engine can easily surpass 250,000 km with proper care.
The most frequent issues are exhaust manifold stud breakage, timing belt failure due to neglect, ignition coil failure, and valve cover gasket leaks. These are well-documented in Mazda service bulletins and are relatively straightforward to fix with OEM parts.
The KL was used in the Mazda 626 (GE), Mazda MX-6 (GE), Eunos 800 (GY), and the Mazda Millenia/Xedos 9 (TA) from 1993 to 2002. It was offered in various states of tune, with the Millenia/Xedos 9 KL-DE being the most powerful variant.
Minor gains are possible via ECU remapping or intake/exhaust modifications, typically yielding 10-15 kW extra. The engine responds well to these modifications due to its robust internals. Significant power increases are limited by the stock internals and lack of forced induction.
Real-world fuel economy is around 10.0 L/100km (28 mpg UK) in combined driving for a Mazda 626. In city traffic, expect 12-13 L/100km (21-23 mpg UK), and on the highway, it can achieve 7.5-8.5 L/100km (33-37 mpg UK), depending on the model and driving style.
Yes. The KL is an interference engine. If the timing belt fails, the pistons will collide with the open valves, causing catastrophic internal engine damage that requires a complete rebuild or replacement.
Mazda originally specified 10W-30 viscosity oil meeting API SG/SH standards. Modern high-quality 10W-30 or 5W-30 synthetic oils that meet API SN or higher are suitable and may offer better protection. Change oil every 10,000 km.
Comprehensive technical documentation and regulatory references
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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GOV.UK: Vehicle Approval
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