Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 ILX.
The 2018 Acura ILX is a passenger car with an 8-speed automatic transmission (AM-S8) and an EPA-estimated 25/35/29 mpg (city/highway/combined). Within the model’s complaint history from 2013 to 2022, this year’s 23 owner complaints mark a notable decline from the 2013 peak of 65, though its 4 recalls and top complaint area of the fuel/propulsion system show that some issues remained before the model reached its lowest point of 3 complaints in 2022.
Fluid capacities, tune-up values and fuel economy at a glance.
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses a BCI 51R · 410 CCA battery. 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.
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic (AM-S8) |
| Overall length | 181.9 in |
| Overall width | 70.9 in |
| Overall height | 55.5 in |
| Wheelbase | 105.1 in |
| Curb weight | 3120 lb |
| Track (front / rear) | 59.4 / 59.8 in |
| Weight distribution (front / rear) | 60/40 |
| EPA city / highway / combined | 25 / 35 / 29 mpg |
| Drivetrain | Front-Wheel Drive |
| Passenger volume | 89 cu ft |
| Cargo volume | 12 cu ft |
| Recommended fuel | Premium Gasoline |
0–60 mph, quarter-mile, horsepower and torque from independent road tests.
Independent road tests for the ILX of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.
| Year | Trim / engine | 0–60 | ¼ mile | HP | Drivetrain |
|---|---|---|---|---|---|
| 2016 | 2.4L Technology Plus & A-SPEC Package 2.4L I-4 | 6.60 sec | 15.20 sec | 201 hp | FWD |
| 2016 | 2.4L Technology Plus & A-SPEC Package 2.4L I-4 | 6.80 sec | 15.20 sec | 201 hp | FWD |
| 2016 | 2.4L Technology Plus & A-SPEC Package 2.4L I-4 | 7.10 sec | 14.70 sec | 201 hp | FWD |
| 2015 | 2.0L Technology Package 2.0L I-4 | 8.30 sec | 16.60 sec | 150 hp | FWD |
| 2014 | 2.4L Premium Package 2.4L I-4 | 6.70 sec | 15.20 sec | 201 hp | FWD |
| 2013 | 2.4L Premium Package 2.4L I-4 | 6.40 sec | 15.00 sec | 201 hp | FWD |
| 2013 | 2.4L Premium Package 2.4L I-4 | 6.40 sec | 14.90 sec | 201 hp | FWD |
| 2013 | 2.4L Premium Package 2.4L I-4 | 6.90 sec | 15.40 sec | 201 hp | FWD |
Capacities, torques and tune-up values from the factory service manual.
Torque lug nuts to 80 ft-lbs. The firing order is 1-3-4-2. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.
| Crankshaft Position (CKP) Sensor Bolt(s) | 9.0 ft-lbs |
| Camshaft Position (CMP) Sensor Bolt(s) | 9.0 ft-lbs |
| Camshaft Bearing/Carrier Cap Bolts or Studs | 10.0 ft-lbs |
| Engine Coolant Temperature (ECT) Sensor Bolt(s) | 9.0 ft-lbs |
| Oxygen (O2S) Sensor Bolt(s) | 33.0 ft-lbs |
| Knock Sense (KS) Bolt(s) | 16.0 ft-lbs |
| Flex or Driveplate Bolts | 55.0 ft-lbs |
| Intake Manifold to Engine Bolts | 18 ft-lbs |
| Lug Nuts | 80 ft-lbs |
| Cylinder Firing Order | 1-3-4-2 |
| Curb Idle Speed (No Load) | 720 rpm |
| Curb Idle Speed Variance (No Load) | 50 rpm |
| Spark Plug Manufacturer | Acura |
| Spark Plug Gap | .039-.043 in |
| Spark Plug Torque | 16 ft-lbs |
| Spark Plug Manufacturer | Acura |
| Spark Plug Gap | .039-.043 in |
| Refrigerant | R134a |
| Refrigerant Capacity | .83-.94 lbs. |
| Oil Group | PAG |
| Oil Type | 46 |
| Oil Capacity | 4.48 oz |
| Standard BCI Group Number | 51R |
| Standard BCI Cranking Performance | 410 cca |
| Fuel Pump Pressure Minimum | 57.0 psi |
| Fuel Pump Pressure Maximum | 64.0 psi |
| Regulated Fuel System Pressure (With Vacuum) | 57.0-64.0 psi |
| Fuel Pump Pressure Minimum | 57.0 psi |
| Fuel Pump Pressure Maximum | 64.0 psi |
| Regulated Fuel System Pressure (With Vacuum) | 57.0 |
| Engine Compression | 135 min psi / Maximum Variation 29 psi |
| Brake Caliper Bolt to Carrier Torque | Front: 37; Rear: 17 |
| Brake Caliper Carrier to Hub Bolt Torque | Front: 80; Rear: 55 |
| Vented Rotor Minimum Thickness for Replacement | Front: .906; Rear: .315 |
| Variation from Parallelism Thickness Variation | .0006 |
| Maximum Rotor Runout | .0016 |
| 1 | 48 inch lbs. | 48 in |
| 2 | 30 ft. lbs. | 30 ft. lbs |
| 3 | 120 degrees | 120 degrees |
| 1 | 37.0 ft. lbs., Step 2: 90 | 37 ft. lbs |
| 1 | 37.0 ft. lbs., Step 2: 90 degrees; If using a new crankshaft or pulley bolt: Step 1: Tighten to 133 ft. lbs. with a torque wrench | 37 ft. lbs |
| 2 | Loosen Bolt and tighten to 37 ft. lbs. | 37 ft. lbs |
| 3 | Tighten pulley bolt an additional 90 | |
| 1 | 30 ft. lbs. | 30 ft. lbs |
| 2 | Turn 90 degrees | 90 degrees |
| 3 | When using new bolts turn 90 degrees. | 90 degrees |
Prep Bearing cap bolts:
| 1 | 26.0 ft. lbs. | 26 ft. lbs |
| 2 | 41 degrees; 8MM bolts: 16.0 ft. lbs. | 41 degrees |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The 2018 Acura ILX sits within a generation that showed its highest complaint volume in 2013 (65 complaints, 6 recalls) before improving substantially through 2015 (19 complaints, 4 recalls). A notable spike occurred in 2016 (51 complaints, 119 TSBs), followed by a return to lower complaint levels in 2017–2018 (20–23 complaints, 4 recalls each, 0 investigations). After 2018, complaints generally continued to decline through 2022 (reaching just 3 complaints and 0 recalls), suggesting iterative refinement. The 2018 model's profile—23 complaints, 4 recalls, 65 TSBs, and zero crash-related investigations—places it in a relatively stable mid-generation position, though the fuel/propulsion system cluster (9 complaints) and fuel system gasoline (7 complaints) indicate unresolved powertrain concerns that persisted across multiple model years within this generation. With no fire complaints and only 2 crash complaints, there is no NHTSA-linked safety signal for this specific year. **This is a reasonable purchase year within the ILX generation: it avoids the early-teething issues of 2013, the 2016 anomaly, and the unknowns of newer model years, while offering a lower complaint burden than 2019–2020.**
All 23 complaints on record, top 7 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 4 campaigns on record for this vehicle.
Acura (American Honda Motor Co.) is recalling certain 2014-2019 Acura ILX vehicles. The vehicles may have a deformed fuel tank, raising the height of the fuel pump and allowing the fuel level float to stick, possibly… Remedy: Acura will notify owners, and dealers will inspect and, as necessary, replace the fuel tank, free of charge. The recall began March 14, 2019. Owners may contact Acura customer…
Acura (American Honda Motor Co.) is recalling certain 2016-2019 Acura ILX vehicles. Excessive grease may prevent the set-ring on the half shaft from fully engaging, allowing the driveshaft to separate from the half… Remedy: Acura will notify owners, and dealers will inspect, and, as necessary, replace the driveshaft and half shaft, free of charge. The recall began August 1, 2019. Owners may contact…
Showing 5 of 65 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| BTI&01222022901 | 2022-01-22 | Suspension | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2021… |
| BTI&01032022907 | 2022-01-03 | Suspension | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2021… |
| B20-047 | 2021-12-23 | Structure | Service Bulletin - This warranty extension applies only to 2016-18 ILX vehicles painted… |
| BTI&12142021 | 2021-12-14 | Suspension | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2021… |
| BTI&11292021906 | 2021-11-29 | Suspension | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2021… |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
NHTSA lists 4 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 25 city / 35 highway / 29 combined mpg.