The Chrysler eTorque is not a standalone engine but a 48V belt — driven starter — generator (BSG) mild — hybrid system applied to existing petrol engines like the 3.6L Pentastar V6 and 5.7L HEMI V8. It functions as an integrated torque — fill and stop — start assist unit, enhancing low — RPM responsiveness and fuel efficiency without requiring plug — in charging. Core technologies include a liquid — cooled 48V lithium — ion battery, power electronics module, and smart regenera…
Chrysler
eTorque-equipped vehicles from 2018–Present meet Euro 6d standards in EU markets and U.S. Tier 3 Bin 125 when paired with compliant base engines.
The Chrysler eTorque is a 48V mild-hybrid assist system engineered for full-size trucks and SUVs (2018–Present). It combines a belt-driven starter-generator with intelligent energy recuperation to deliver torque-fill during acceleration and seamless stop-start. Designed to complement Euro 6d and U.S. Tier 3 compliant base engines, it enhances efficiency without altering core engine architecture.
| Parameter | Value | Source |
|---|---|---|
System type | 48V Mild Hybrid (Belt-Driven Starter Generator) | |
Base engine compatibility | 3.6L Pentastar V6, 5.7L HEMI V8 | |
Electric motor output | Up to 90 Nm torque assist, 10 kW peak power | |
Battery type | Lithium-ion, 48V, 0.43 kWh (Ram), 0.25 kWh (Jeep) | |
Battery location | Under rear seat (Ram), Under cargo floor (Jeep) | |
Cooling system | Liquid-cooled (battery and power electronics) | |
Regenerative braking | Yes, up to 12 kW peak recuperation | |
Stop-start system | Enhanced with eTorque for seamless restart | |
Emissions contribution | Reduces idle emissions, supports base engine compliance | |
System weight | Approx. 35 kg (including battery) |
The Chrysler eTorque system was used across Stellantis's DT/JL/WL platforms with longitudinal mounting. This system received platform-specific adaptations-different battery capacities in the Ram 1500 versus Jeep Wrangler-and from 2022 the facelifted models adopted updated eTorque belt components, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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The eTorque system is generally reliable, sharing robust electrical architecture with other Stellantis hybrids. Early models (2019-2021) had eTorque belt tensioner concerns, resolved in MY2022. With proper maintenance—especially avoiding deep discharges and inspecting the belt system—it can deliver 150,000+ miles of service. The 48V battery is the most likely component to need replacement long-term.
Top issues include eTorque belt/tensioner wear (pre-2022), 48V battery degradation in hot climates, power electronics faults, and occasional software glitches. These are well-documented in Chrysler service bulletins 18-045-21. Most are preventable with correct maintenance and using updated OEM parts. Belt replacement is the most frequent repair.
eTorque is available on the Ram 1500 (2019–Present), Jeep Wrangler (2020–Present), Jeep Gladiator (2020–Present), and Jeep Grand Cherokee (2021–Present). It is paired with either the 3.6L Pentastar V6 or the 5.7L HEMI V8. It is not a standalone engine but a mild-hybrid assist system for these existing powertrains.
The eTorque system itself is not typically tuned. However, the base engine (3.6L or 5.7L) can be tuned. Aggressive tunes that increase electrical load or disable eTorque functionality can cause system faults or premature wear. It's best to retain eTorque operation and use a reputable tuner familiar with the 48V system to avoid compatibility issues.
eTorque typically improves fuel economy by 1-2 mpg (0.5-1.0 L/100km) over the non-hybrid version of the same engine. In a Ram 1500 with the 5.7L HEMI, expect ~16 mpg combined with eTorque versus ~15 mpg without. The primary benefits are smoother stop-start and enhanced low-end torque, rather than dramatic fuel savings.
No. eTorque is a mild-hybrid (MHEV) system. It cannot propel the vehicle on electric power alone. Its main functions are providing torque-fill during acceleration, enabling seamless stop-start, and recuperating energy during braking. It does not require plug-in charging and has a much smaller battery than full hybrids or plug-in hybrids like the Wrangler 4xe.
The eTorque system requires minimal specific maintenance. The 48V belt should be inspected for wear or glazing every 60,000 miles, especially on pre-2022 models. The 48V battery health can be checked via an OEM scan tool. No special fluids are required beyond those for the base engine. Avoid leaving the vehicle in accessory mode for extended periods to prevent 48V battery discharge.
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