The Chrysler EC3 is a 3,604 cc, 60‑degree V6 petrol engine produced between 2012 and 2018. It features an aluminium block and heads, dual overhead camshafts (DOHC), and variable valve timing (VVT) on both intake and exhaust camshafts. This configuration delivers smooth, responsive power, with outputs typically rated at 220 kW (296 PS) and 353 Nm of torque.
Fitted to the Chrysler 200, Dodge Dart, and Jeep Cherokee, the EC3 engine was engineered for a blend of everyday drivab…
Chrysler
Production years 2012–2018 meet Euro 5 standards for applicable markets (VCA UK Type Approval #VCA/EMS/5681).
The Chrysler EC3 is a 3,604 cc 60-degree V6 petrol engine engineered for compact and mid-size sedans and SUVs (2012-2018). It combines DOHC with dual variable valve timing to deliver strong, linear power and refined operation. Designed to meet Euro 5 standards, it offers a compelling mix of performance and efficiency for its class.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,604 cc | |
Fuel type | Petrol | |
Configuration | 60° V6, DOHC, 24-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 96.0 mm × 83.0 mm | |
Power output | 220 kW (296 PS) @ 6,400 rpm | |
Torque | 353 Nm @ 4,800 rpm | |
Fuel system | Sequential multi-port fuel injection (SFI) | |
Emissions standard | Euro 5 | |
Compression ratio | 10.2:1 | |
Cooling system | Water-cooled | |
Turbocharger | None | |
Timing system | Chain-driven (dual primary chains) | |
Oil type | Chrysler MS-6395 (SAE 5W-20) | |
Dry weight | 182 kg |
The Chrysler EC3 was used across Chrysler's PF and KL platforms with transverse mounting. This engine received platform-specific adaptations-including unique engine mounts and accessory drive layouts for the 200 versus the Cherokee-but remained largely consistent mechanically. All adaptations are documented in OEM technical bulletins.
The EC3's primary reliability focus is on the variable valve timing (VVT) system and associated oil pressure, with elevated incidence in vehicles subjected to infrequent oil changes. Chrysler internal service data indicates VVT solenoid or phaser issues are a leading cause of check engine lights in high-mileage examples, while oil sludge buildup can exacerbate timing chain tensioner wear. Maintaining strict oil change intervals with the correct specification is critical.
Analysis derived from Chrysler technical bulletins (2012-2018) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
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The EC3 is generally robust with strong internals. Its main long-term concerns are the VVT system and timing chain tensioners, which rely heavily on clean oil and correct viscosity. With strict adherence to maintenance schedules using the specified 5W-20 oil, the EC3 can easily surpass 200,000 km. Neglecting oil changes is the primary cause of major issues.
The most frequent issues are VVT solenoid/phaser failures causing check engine lights, timing chain tensioner wear leading to noise, intake manifold gasket leaks causing vacuum issues, and ignition coil failures resulting in misfires. These are well-documented in Chrysler service bulletins and repair databases.
The EC3 3.6L V6 was primarily used in the Chrysler 200 (2015-2017), Dodge Dart (2013-2016), and Jeep Cherokee (2014-2018). It was the premium V6 option for these transverse-engine platforms during this period, succeeding the earlier 2.4L I4 in higher trims.
Yes, the EC3 responds well to basic bolt-on modifications. A performance intake and exhaust can yield modest gains. More significant power increases require forced induction (supercharger/turbo kit), which is popular but requires supporting modifications (fuel system, ECU tune, cooling) to be reliable. Stock internals are strong but have limits.
Fuel economy is typical for a large, naturally aspirated V6 in a transverse application. Expect around 14-16 L/100km (17-20 mpg UK) in city driving and 10-12 L/100km (23-28 mpg UK) on the highway. Combined figures usually land around 12-13 L/100km (21-23 mpg UK), heavily dependent on driving style and vehicle weight.
Yes. The Chrysler EC3 is an interference engine. If the timing chain were to fail or jump significantly, the pistons would collide with the open valves, causing catastrophic internal engine damage. This underscores the importance of addressing any timing chain noise promptly.
Chrysler mandates the use of 5W-20 engine oil meeting their MS-6395 specification. This specific viscosity is crucial for the proper operation of the variable valve timing system. Using a heavier oil can cause VVT-related problems and check engine lights. Change intervals should not exceed 10,000 km.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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