JeepWrangler20113.8L/jeep/wrangler/2011/3-8l/
JK platform

2011 Jeep Wrangler — 3.8L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2011 Wrangler 3.8L.

Body SUVEngine 3.8LTransmission Automatic 4-spd

The 2011 Jeep Wrangler sits within the JK generation as a 3.8L SUV matched to a four-speed automatic and returning EPA fuel-economy figures of 15/19/17 mpg. With 482 owner complaints filed against the year — air bags dominating the issue list — and 11 recalls on file, the model year reflects a busy but middling service record rather than a crisis point. Plotted against the Wrangler's broader 1990-2023 history, which ranges from a near-silent 5 complaints in 1996 to a peak of 1,793 in 2018, the 2011 lands well clear of the nameplate's worst stretches, making it one of the quieter chapters in an otherwise uneven reliability story.

Model year20112010200920082007

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Lug nut torque95 ft-lbsOEM · verified
EPA fuel economy15/19/17 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 34 · 600 CCA battery, OE oil filter 04105409AE. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 34 · 600 CCAOEM · verified
Tire sizeLT255-75R17OEM · verified
Wheel / rim7.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter04105409AE
Engine air filter68257791AB
Spark plugSP303917AC
BatteryBB34F101AA
Front wiper blades68002390AA alt 68002393AA
Thermostat68273161AA
Cabin air filter68535613AA

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length152.8 in
Overall width73.6 in
Overall height72.4 in
Wheelbase95.3 in
Curb weight4165 lb
Track (front / rear)62.6 / 62.6 in
Weight distribution (front / rear)50/50

Ratings & economy EPA / vPIC

EPA city / highway / combined15 / 19 / 17 mpg
Drivetrain4-Wheel Drive
Recommended fuelRegular Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

No 2011 road test on record; the results below are same-engine tests from nearby model years, each shown under its own year.

9.8–11.5 sec0–60 mph (tested)quickest 9.80 sec — 2008 Rubicon 2-door
202 hpHorsepower (as tested)
237 lb-ftTorque (as tested)
YearTrim / engine0–60¼ mileHPDrivetrain
2008Rubicon 2-door 3.8L V69.80 sec17.10 sec202 hp4x4
2008Unlimited Rubicon 4-door 3.8L V611.50 sec18.30 sec202 hp4x4
2007Unlimited Rubicon 4-door 3.8L V610.00 sec17.30 sec202 hp4x4
2007Unlimited Rubicon 4-door 3.8L V611.20 sec18.10 sec202 hp4x4

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine 80W-90 · GL-5 in the differential, DOT 3 brake fluid. Torque lug nuts to 95 ft-lbs. The firing order is 1-2-3-4-5-6.

Lubricants & capacities

Automatic Transmission FluidATF+4
Automatic Transmission Fluid Capacity4
Automatic Transmission FluidATF+4
Automatic Transmission Fluid Capacity5.3
Brake FluidDOT 3
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity2 Pints,
Differential Gear Oil80W-90 · GL-5

Engine torques

Crankshaft Pulley and/or Damper Bolts129 ft-lbs
Engine Flywheel Bolts65 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs9 ft-lbs

Chassis torques

Lug Nuts95 ft-lbs
Front Wheel Hub100 ft-lbs

Ignition

Cylinder Firing Order1-2-3-4-5-6

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.13 lbs
Oil GroupPAG
Oil Type46
Oil Capacity5.00 oz
Standard BCI Group Number34
Standard BCI Cranking Performance600 cca

Service checks

Pressure Test18 psi
Radiator Cap Pressure Relief18-21 psi
Thermostat Opening Temperature195 °F
Injector Primary Resistance11.4-12.6 @ 68 degreesF ohms
Engine Compression100 Minimum psi
Engine Oil Pressure30-80 psi
Engine Oil Pressure RPM3000 rpm
Intake Valve LashHydraulic in

Brakes

Torque Caliper to Bracket26 ft-lbs
Torque to Knuckle77 ft-lbs / 100 ft-lbs
Minimum Pad Thickness0.040 in
Minimum Shoe Thickness0.040 in
Rotor Max Parallel Variation0.00035 in
Rotor Runout Limit0.0008 in
Rotor Minimum Machining1.049 in / 0.409 in
Rotor Discard at or Under1.048 in / 0.408 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
15 ft. lbs., Step 2: 21 ft. lbs., Step 3: 905 ft. lbs
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages
12 ft. lbs., step 2: 72 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 8,000 mi; spark plugs every 96,000 mi; coolant at 104,000 mi. The big-interval services (at 104,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 8,000 miEngine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
At 16,000 miCV Joint Boot (inspect) · Exhaust System (Complete) (inspect)
Every 16,000 miBrake Linings (inspect) · Suspension System (inspect)
Every 24,000 miCV Joint Boot (inspect) · Exhaust System (Complete) (inspect)
Every 32,000 miEngine Air Filter Element (replace) · Parking Brake System (adjust) · Transfer Case Assembly (inspect fluid level)
At 48,000 miCV Joint Boot (inspect) · Exhaust System (Complete) (inspect)
Every 96,000 miPCV Valve (inspect) · Spark Plug Wires (replace) · Spark Plugs (replace)
At 104,000 miEngine Coolant System (drain, flush & refill)
At 120,000 miDrive Belt (replace)

Owner how-tos

Condensed service procedures for routine maintenance. Procedures that require dealer diagnostic equipment are identified and summarized only.

Common procedures

Key fob — remote (RKE) programming programming new fob buttons Dealer tool OEM · verified
Tool requiredDRBIII scan tool (dealer / locksmith)
WhyTransmitter codes are written into the receiver in the passenger door module
Anti-theft (SKIS) — module initialization after immobilizer module replacement Dealer tool OEM · verified
When neededAfter Sentry Key Immobilizer Module (SKIM) replacement
Tool requiredDRBIII scan tool
Also requiredThe vehicle's four-digit PIN code

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2011 Wrangler recorded 482 federal complaints, 11 recalls, 6 investigations, and a notably high 158 technical service bulletins (TSBs), positioning it near the upper‑midpoint of the generation’s complaint curve that peaks in 2008 (1,255 complaints) and resurges in 2018 (1,793 complaints). Compared with the immediate pre‑year, 2010’s complaints (684) and recalls (11) were higher, while 2012 saw a jump to 828 complaints and 10 recalls, indicating that 2011 sits in a modest dip after the 2008‑2009 high but before the 2012‑2014 upward trend. The dominant complaint categories for 2011 were Air Bags (102 reports) and Fuel/Propulsion System issues (75 reports), with relatively few crash‑related (13) and fire‑related (20) reports, suggesting that most problems are component‑specific rather than safety‑critical. Across the entire generation, complaints and recalls generally rose from the mid‑1990s, peaked in the late 2000s, softened in the early 2010s, then escalated again in the late 2010s, placing 2011 in a comparatively quieter segment. **Takeaway:** 2011 offers a relatively moderate complaint and recall profile within its era, making it a reasonably safe year to consider for a used Wrangler, provided you verify that any air‑bag or fuel‑system TSBs have been addressed.

11
Open recalls
NHTSA campaigns
158
Service bulletins
Manufacturer communications
6
ODI investigations
Office of Defects Investigation
482
Owner complaints
13 involved a crash · 20 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 482 complaints on record, top 8 components.

Air Bags102
Fuel/Propulsion System75
Electrical System27
Power Train26
Engine19
Structure15
Service Brakes14
Steering14

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 11 campaigns on record for this vehicle.

19V018000Air Bags:Frontal:Passenger Side:Inflator ModuleReported 15/01/2019

Chrysler (FCA US LLC) is recalling certain 2010 Dodge Ram 3500, Ram 4500/5500, 2010-2011 Dodge Dakota, 2010-2014 Dodge Challenger, 2010-2015 Dodge Challenger, Chrysler 300, and 2010-2016 Jeep Wrangler vehicles. Upon… Remedy: Owners are advised not to drive their vehicle until the recall repair is complete. Chrysler will notify owners, and dealers will replace the passenger frontal air bag inflator…

19V680000Seat Belts:Front:AnchorageReported 26/09/2019

Chrysler (FCA US LLC) is recalling certain 2011-2018 Jeep Wrangler right hand drive vehicles. The driver's seat belt buckle mounting strap may fracture and separate from the seat frame. Remedy: FCA US will notify owners, and dealers will replace the driver's seat belt buckle, free of charge. Interim notices informing owners of the safety risk were mailed November 19…

Technical service bulletins NHTSA · verified

Showing 5 of 158 bulletins on record with NHTSA.

BulletinDateComponentSummary
1074182025-09-18Service BrakesSWITCH - CLUTCH STARTER INTERLOCK & MASTER CYLINDER ASSEMBLY - CLUTCH
91006452025-08-15Unknown Or OtherVerify Reman part number availability. Order the "R" part number for all orders…
91006532025-08-15Unknown Or OtherVerify Reman part number availability. Order the "R" part number for all orders…
1039542025-04-02Unknown Or OtherACTUATOR - A/C AND HEATER
1040872025-04-02Unknown Or OtherACTUATOR - A/C AND HEATER

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Wrangler. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

Does the 2011 Wrangler have open recalls?

NHTSA lists 11 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 3.8L get?

EPA figures are 15 city / 19 highway / 17 combined mpg.