Factory maintenance schedule OEM · verified
Normal service, condensed from the factory interval matrix.
| At 160,000 mi | Universal Vehicle Operation (inspect idle speed) |
Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 RDX.
The 2018 Acura RDX is an SUV that uses a 4.5‑quart oil capacity and 0W‑20 oil, mated to a 6‑speed automatic transmission and delivers EPA‑rated fuel economy of 19 city, 27 highway, 22 combined mpg. In the context of its model‑wide reliability record, the 2018 version registers only 75 total owner complaints—well under the 431 complaints seen in the peak 2019 year—suggesting a relatively stable ownership experience. A single recall has been issued, and the majority of complaints cluster in the fuel system, underscoring the model's overall reliability.
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 24F · 550 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 (S6) |
| Overall length | 183.5 in |
| Overall width | 73.6 in |
| Overall height | 66.5 in |
| Wheelbase | 105.5 in |
| Curb weight | 3856 lb |
| Track (front / rear) | 63 / 63.4 in |
| Weight distribution (front / rear) | 59/41 |
| EPA city / highway / combined | 19 / 27 / 22 mpg |
| Drivetrain | All-Wheel Drive |
| Recommended fuel | Premium Gasoline |
0–60 mph, quarter-mile, horsepower and torque from independent road tests.
Independent road tests for the RDX 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 | Advance Package 3.5L V6 | 6.20 sec | 14.80 sec | 279 hp | AWD |
| 2016 | Advance Package 3.5L V6 | 6.20 sec | 14.80 sec | 279 hp | AWD |
| 2016 | Advance Package 3.5L V6 | 6.50 sec | 15.00 sec | 279 hp | AWD |
| 2014 | 3.5L V6 Technology Package | 6.20 sec | 14.80 sec | 273 hp | AWD |
| 2013 | 3.5L V6 Technology Package | 6.20 sec | 14.80 sec | 273 hp | AWD |
| 2013 | 3.5L V6 Technology Package | 6.30 sec | 14.90 sec | 273 hp | AWD |
| 2013 | 3.5L V6 Technology Package | 7.00 sec | 15.40 sec | 273 hp | AWD |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 4.5 qt of 0W-20 engine oil, DOT 3 brake fluid. Torque lug nuts to 80 ft-lbs. The firing order is 1-4-2-5-3-6.
| Automatic Transmission Fluid | ATF |
| Automatic Transmission Fluid Capacity | 3.3 |
| Brake Fluid | DOT 3 |
| Differential Gear Oil Capacity | 2.6 qt |
| Engine Coolant | Use Honda Type 2 antifreeze |
| Engine Coolant Capacity | 7.8 |
| Engine Oil | 0W-20 |
| Engine Oil Capacity | 4.5 qt |
| Crankshaft Position (CKP) Sensor Bolt(s) | 9.0 ft-lbs |
| Camshaft Position (CMP) Sensor Bolt(s) | 3.0 ft-lbs |
| Camshaft Sprocket and/or Gear Bolt(s) | 68.0 ft-lbs |
| Engine Coolant Temperature (ECT) Sensor Bolt(s) | 9.0 ft-lbs |
| Oxygen (O2S) Sensor Bolt(s) | 32.0 ft-lbs |
| Knock Sense (KS) Bolt(s) | 16.0 ft-lbs |
| Flex or Driveplate Bolts | AT: 55.0 ft-lbs, MT: 87.0 ft-lbs |
| Exhaust Manifold to Cylinder Head Bolts | 24 ft-lbs |
| Lug Nuts | 80 ft-lbs |
| Front Wheel Hub | 242.0 |
| Rear Wheel Hub | 181.0 |
| Cylinder Firing Order | 1-4-2-5-3-6 |
| Curb Idle Speed (No Load) | 700 rpm |
| Curb Idle Speed Variance (No Load) | 50 rpm |
| Spark Plug Manufacturer | Acura |
| Spark Plug Gap | 3471cc and 3474cc Engines: |
| Spark Plug Torque | 16 ft-lbs |
| Refrigerant | R134a |
| Refrigerant Capacity | 0.95-1.06 lbs |
| Oil Group | PAG |
| Oil Type | 46 |
| Oil Capacity | 2.75 oz |
| Standard BCI Group Number | 24F |
| Standard BCI Cranking Performance | 550 cca |
| Standard BCI Group Number | 24F |
| Fuel Pump Pressure Minimum | 58.0 psi |
| Fuel Pump Pressure Maximum | 65.0 psi |
| Regulated Fuel System Pressure (With Vacuum) | 58.0-65.0 psi |
| 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: 101; Rear: 80 |
| Vented Rotor Minimum Thickness for Replacement | Front: .906; Rear: .295 |
| Variation from Parallelism Thickness Variation | .0006 |
| Maximum Rotor Runout | .0016 |
| Maximum Drum Diameter | Parking Brake Drum: 7.913 |
| 1 | 15.0 ft. lbs. | 15 ft. lbs |
| 2 | 90 degrees | 90 degrees |
| 1 | 89.0 ft. lbs., Step 2: 90 degrees. Only if you are using a new pulley bolt or crankshaft, tighten the bolt in the following steps: Step 1: 52.0 ft. lbs., Step 2: 90 degrees, Step 3: loosen bolt, Step 4: 89.0 ft. lbs., Step 5: 90 | 89 ft. lbs |
Prep Bearing cap bolts:
| 1 | 30.0 ft. lbs. | 30 ft. lbs |
| 2 | 47 degrees; Side cap bolts: 36.0 ft. lbs. | 47 degrees |
Normal service, condensed from the factory interval matrix.
| At 160,000 mi | Universal Vehicle Operation (inspect idle speed) |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The 2018 Acura RDX sits near the bottom of a steep decline in complaints and recalls that began in the 2013‑2015 spike and peaked at 406 complaints in 2015. In 2018 it recorded only 75 complaints and a single recall, the lowest complaint count in the decade and the only year with zero investigations. The trend shows a gradual rebound after 2015, with 2016‑2018 maintaining low complaint levels before a sharp increase again in 2019. This places the 2018 model in a favorable position, reflecting improved reliability relative to earlier years. Given the low recall count, minimal investigations, and the best complaint figures of the generation, 2018 is a strong year to consider buying.
All 75 complaints on record, top 8 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 1 of 1 campaigns on record for this vehicle.
Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX, RLX, TLX, 2019-2022… Remedy: Dealers will replace the fuel pump module, free of charge. Owner letters were mailed September 6, 2024. Owners may contact Honda customer service at 1-888-234-2138. Honda's…
Showing 5 of 56 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| ONL6T806032025 Acura Form | 2025-06-03 | Power Train | Owner Notification Letter - Under certain circumstances, the torque converter lock-up… |
| ONL6T806032025 Acura Lett | 2025-06-03 | Power Train | Owner Notification Letter - Under certain circumstances, the torque converter lock-up… |
| B23-029 | 2025-04-18 | Engine | Service Bulletin - The lock-up clutch cannot provide adequate holding force due to… |
| BEBM04182025901 | 2025-04-18 | Engine | Dealer Message - Torque converters may not have been manufactured to proper… |
| B23-029 | 2024-02-26 | Engine And Engine Cooling | Service Bulletin - The lock-up clutch cannot provide adequate holding force due to… |
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.
4.5 qt of 0W-20 STARBURST, per the factory manual.
NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 19 city / 27 highway / 22 combined mpg.