The Jeep ERM – Petrol (Flex — Fuel) (FCA) is a 3,239 cc, V6 naturally aspirated engine produced between 2018 and 2023. It features port fuel injection, dual overhead camshafts (DOHC), and a variable intake manifold. This unit delivers 200 kW (271 PS) and 325 Nm of torque, engineered for smooth, linear power delivery across its rev range.
Fitted primarily to the Cherokee (KL) and Grand Cherokee (WK2), the ERM was designed for drivers seeking refined performance and towing cap…
Production years 2018–2023 meet Euro 6d-TEMP standards (VCA UK Type Approval #VCA/FCA/8912).
The Jeep ERM – Petrol (Flex-Fuel) (FCA) is a 3,239 cc V6 naturally aspirated engine engineered for mid-size and large SUVs (2018-2023). It combines port fuel injection with a variable intake manifold to deliver smooth, linear power and strong low-end torque. Designed to meet Euro 6d-TEMP standards, it balances refined performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,239 cc | |
Fuel type | Petrol (Flex-Fuel capable) | |
Configuration | V6, DOHC, 24‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 94.0 mm × 77.5 mm | |
Power output | 200 kW (271 PS) | |
Torque | 325 Nm @ 4,250 rpm | |
Fuel system | Port fuel injection (Multi-Point) | |
Emissions standard | Euro 6d‑TEMP | |
Compression ratio | 10.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain‑driven | |
Oil type | FCA MS‑12991 (SAE 5W‑30) | |
Dry weight | 170 kg |
The Jeep ERM – Petrol (Flex-Fuel) (FCA) was used across Jeep's KL and WK2 platforms with transverse mounting. This engine received platform-specific adaptations-reinforced mounts for the Grand Cherokee-with no major facelift revisions affecting core compatibility. All adaptations are documented in OEM technical bulletins.
The ERM's primary reliability risk is variable intake manifold actuator failure, with elevated incidence in vehicles using lower-quality fuel or with high mileage. FCA internal data from 2020 indicated a notable number of actuator replacements under warranty for early-build vehicles, while UK DVSA records show no systemic emissions failures linked to this issue. Adherence to using Top Tier fuel and replacing the actuator with the latest revised part make longevity critical.
Analysis derived from FCA technical bulletins (2019-2022) and UK DVSA failure statistics (2020-2023). 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 ERM offers smooth, refined performance and good towing capability, but its long-term reliability hinges on addressing the known intake manifold actuator issue. Key concerns are the actuator (especially pre-2021) and water pump, both sensitive to maintenance. Using premium fuel (95 RON) and changing the oil on schedule greatly improves longevity. Later models (post-2021) have addressed the actuator design flaw.
The most frequent issues are variable intake manifold actuator failures, coolant leaks from the water pump, oil leaks from valve cover gaskets, and PCV system clogging. These are well-documented in FCA service bulletins, particularly SIB 09-015-20 for the intake manifold actuator.
This 3.2L V6 petrol engine was used in the Jeep Cherokee (KL) and Jeep Grand Cherokee (WK2) from 2018 to 2023. It was typically badged as '3.2L V6'. It was not used in the Renegade, Compass, or Wrangler.
Yes, the ERM responds to ECU remapping, though gains are more modest than turbocharged engines. Stage 1 tunes can safely increase power to around 290-300 PS and torque to 350 Nm. More aggressive tuning requires significant modifications. Always ensure the tune is from a reputable tuner familiar with FCA systems.
Official combined figures are around 10.5 L/100km (27 mpg UK) for the Cherokee and 11.2 L/100km (25 mpg UK) for the Grand Cherokee. Real-world economy varies: expect 22-28 mpg UK in mixed driving, heavily influenced by driving style, vehicle load, and terrain. Flex-fuel operation on E85 will reduce economy by approximately 25-30%.
Yes. The ERM is an interference engine. If the timing chain fails or jumps, the pistons will collide with the open valves, causing catastrophic engine damage. Fortunately, the chain is designed to be very durable and is not a common failure point.
FCA mandates oil meeting their MS-12991 specification, typically a 5W-30 full synthetic. Using the correct oil is crucial for the variable valve timing system's longevity and overall engine protection. Change intervals should not exceed 15,000 km or 12 months.
Comprehensive technical documentation and regulatory references
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JEEP Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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