The Mazda F6JB is a 1,998 cc, inline‑four naturally aspirated petrol engine produced between 2007 and 2011. It features dual overhead camshafts (DOHC) and variable valve timing (S — VT) to deliver responsive power across the rev range. This engine was designed for smooth, linear power delivery, making it well — suited for everyday commuting and relaxed highway cruising.
Fitted primarily to the second — generation Mazda3 (BK) and Mazda5 (CR) MPV, the F6JB was engineered fo…
Mazda
Production years 2007–2011 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/5678).
The Mazda F6JB is a 1,998 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and MPVs (2007-2011). It combines DOHC with S-VT variable valve timing to deliver smooth, linear power and responsive throttle. Designed to meet Euro 4 standards, it balances everyday drivability with respectable fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,998 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally Aspirated | |
Bore × stroke | 83.5 mm × 91.2 mm | |
Power output | 104–108 kW (140–145 PS) | |
Torque | 180–184 Nm @ 4,000 rpm | |
Fuel system | Sequential Multi-Point Fuel Injection (SFI) | |
Emissions standard | Euro 4 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven | |
Oil type | Mazda Moly 5W-30 | |
Dry weight | 128 kg |
The Mazda F6JB was used across Mazda's BK/CR platforms with transverse mounting. This engine received platform-specific adaptations-slightly different intake manifolds for the Mazda3 and Mazda5-but no major facelift revisions occurred during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
The F6JB's primary reliability risk is S-VT solenoid failure, with elevated incidence in vehicles subjected to infrequent oil changes or short-trip driving. Mazda internal service data indicates this as a leading cause of drivability complaints for this engine family, while timing chain rattle, though less common, can occur if maintenance is neglected. Adherence to the specified oil type and interval is critical for long-term health.
Analysis derived from Mazda technical bulletins (2007-2011) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
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Yes, the F6JB is generally a reliable and robust engine when maintained correctly. Its main weakness is the S-VT solenoid, which requires strict adherence to oil change intervals. With proper care using the specified 5W-30 oil, these engines can easily exceed 200,000 km without major issues.
The most frequent issues are S-VT solenoid sticking (causing rough idle), timing chain tensioner wear (causing a cold-start rattle), ignition coil failure (causing misfires), and PCV valve blockage (leading to oil leaks). These are all well-documented in Mazda service information.
The F6JB 2.0L petrol engine was used in the second-generation Mazda3 (BK chassis, 2007-2011) and the first-generation Mazda5 (CR chassis, 2007-2010). It was the larger of the two petrol engine options for these models, alongside the 1.6L Z6 engine.
Yes, but gains are modest. An ECU remap can yield around 10-15 kW extra by optimizing ignition and fuel maps. More significant power requires hardware like a performance exhaust and intake, but the naturally aspirated design limits potential compared to turbocharged engines. Reliability remains good with mild tuning.
Real-world fuel economy is respectable. In a Mazda3 2.0i, expect around 8.5 L/100km in city driving and 5.8 L/100km on the highway, averaging approximately 40 mpg UK combined. The lighter Mazda3 will be more efficient than the heavier Mazda5 MPV.
Yes. The F6JB is an interference engine. If the timing chain were to fail or jump significantly, the pistons would collide with the open valves, causing severe internal engine damage. This underscores the importance of addressing any timing chain noise promptly.
Mazda specifies 5W-30 viscosity oil meeting their 'Mazda Moly' or equivalent specification (e.g., API SM/GF-4). Using the correct oil is crucial for protecting the S-VT system and timing chain. Change intervals should not exceed 15,000 km or 12 months.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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