Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2009 RDX.
The 2009 Acura RDX is a compact SUV equipped with a 5.0 quart engine oil capacity using 5W-30 viscosity, paired with a 5-speed automatic transmission and achieving EPA fuel economy ratings of 17 mpg city, 22 mpg highway, and 19 mpg combined; this model year sits in the lower-middle portion of the RDX's complaint history spanning 2007 to 2025, with its 15 total owner complaints and two recalls representing a notably more reliable profile compared to the model's peak of 431 complaints in 2019, though the lowest complaint year on record came much later in 2024 with just 10 reported issues.
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 35 · 440 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 (S5) |
| Overall length | 180.7 in |
| Overall width | 73.6 in |
| Overall height | 65.4 in |
| Wheelbase | 104.3 in |
| Curb weight | 3929 lb |
| Track (front / rear) | 61.4 / 62.2 in |
| Weight distribution (front / rear) | 57/43 |
| EPA city / highway / combined | 17 / 22 / 19 mpg |
| Drivetrain | 4-Wheel or 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 |
|---|---|---|---|---|---|
| 2010 | 2.3L Technology Package 2.3L Turbo I-4 | 6.40 sec | 15.10 sec | 240 hp | FWD |
| 2007 | 2.3L Technology Package 2.3L Turbo I-4 | 6.50 sec | 15.10 sec | 240 hp | AWD |
| 2007 | 2.3L Technology Package 2.3L Turbo I-4 | 6.50 sec | 15.10 sec | 240 hp | AWD |
| 2007 | 2.3L Technology Package 2.3L Turbo I-4 | 6.70 sec | 15.30 sec | 240 hp | AWD |
| 2007 | 2.3L Technology Package 2.3L Turbo I-4 | 7.00 sec | 15.50 sec | 240 hp | AWD |
| 2007 | 2.3L Technology Package 2.3L Turbo I-4 | 7.10 sec | 15.60 sec | 240 hp | AWD |
| 2007 | 2.3L Technology Package 2.3L Turbo I-4 | 7.30 sec | 15.60 sec | 240 hp | AWD |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 5.0 qt of 5W-30 engine oil, DOT 3 brake fluid. Torque lug nuts to 80 ft-lbs, the oil drain plug to 29.0 ft-lbs. The firing order is 1-3-4-2.
| Automatic Transmission Fluid | ATF |
| Automatic Transmission Fluid Capacity | 3.3 |
| Automatic Transmission Fluid | ATF |
| Automatic Transmission Fluid Capacity | 3 |
| Brake Fluid | DOT 3 |
| Differential Gear Oil Capacity | 5.3 Pints |
| Engine Oil | 5W-30 |
| Engine Oil Capacity | 5.0 qt |
| Camshaft Bearing/Carrier Cap Bolts or Studs | 8mm Bolts: 16 ft-lbs, 6mm Bolts: 9 ft-lbs |
| Engine Flywheel Bolts | 54 ft-lbs |
| Intake Manifold to Engine Bolts | 16 ft-lbs |
| Exhaust Manifold to Cylinder Head Bolts | 33 ft-lbs |
| Intake Manifold to Engine Bolts | 16 ft-lbs |
| Exhaust Manifold to Cylinder Head Bolts | 33 ft-lbs |
| Main Bearings | Except 8mm bolts, Step |
| Engine Oil Pan Drain Plug | 29.0 ft-lbs |
| Lug Nuts | 80 ft-lbs |
| Transfer Case Fill Plug | 33.0 ft-lbs |
| Transfer Case Drain Plug | 33.0 ft-lbs |
| Automatic Transmission Drain Plug | 36.0 ft-lbs |
| Front Wheel Hub | 242 ft-lbs |
| Rear Wheel Hub | 181 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 | NGK |
| Spark Plug Gap | 0.028-0.031 in |
| Spark Plug Torque | 13.0 ft-lbs |
| Ignition Timing | 14 degrees |
| Ignition Timing Acceptable Variance | 2 degrees |
| Refrigerant | R134a |
| Refrigerant Capacity | .99-1.10 lbs |
| Oil Type | PAG 46 |
| Oil Capacity | 2.50-2.83 oz |
| Standard BCI Group Number | 35 |
| Standard BCI Cranking Performance | 440 cca |
| Pressure Test | 14-18 psi |
| Radiator Cap Pressure Relief | 14-18 psi |
| Thermostat Opening Temperature | 169-176 °F |
| Pressure Test | 14-18 psi |
| Radiator Cap Pressure Relief | 14-18 psi |
| Thermostat Opening Temperature | 169-176 °F |
| Regulated Fuel System Pressure (Without Vacuum) | 47 |
| Engine Compression | 135 minimum PSI. 28 maximum variation PSI. |
| Torque Caliper to Bracket | 37 ft-lbs / 17 ft-lbs |
| Torque to Knuckle | 101 ft-lbs / 80 ft-lbs |
| Minimum Pad Thickness | 0.060 in |
| Rotor Max Parallel Variation | 0.0006 in |
| Rotor Runout Limit | 0.0016 in |
| Rotor Nominal Thickness From | 1.094 in / 0.35 in |
| Rotor Nominal Thickness To | 1.106 in / 0.358 in |
| Rotor Discard at or Under | 1.024 in / 0.295 in |
| 1 | 22 ft. lbs., Step 2: 90 | 22 ft. lbs |
| 1 | 36 ft. lbs., step 2: 90 | 36 ft. lbs |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The 2009 Acura RDX marks among the lowest complaint volumes of the 2007-2012 period, dropping to 15 reports from 53 in 2007 and 33 in 2008. This year sits at the beginning of a stable period from 2009 to 2012 where complaints remained between 15 and 22, before rising significantly to 161 in 2013. Federal records show 2 recalls and 55 Technical Service Bulletins for 2009, which is lower than the 3 recalls and 73 TSBs recorded for the 2007 model year. Specific feedback highlights 10 Air Bag complaints, with zero fire complaints and only one crash complaint noted in the database. Given its position at the low end of the 2007-2012 complaint arc, the 2009 model presents a statistically favorable option compared to the initial launch years or the higher-volume records seen from 2013 onward.
All 15 complaints on record, top 6 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 2 campaigns on record for this vehicle.
Honda (American Honda Motor Co.) is recalling specific 2003 Acura 3.2CL, 2013-2016 ILX, 2013-2014 ILX Hybrid, 2003-2006 MDX, 2007-2016 RDX, 2002-2003 3.2TL, 2004-2006, and 2009-2014 TL, 2010-2013 ZDX and 2001-2007 and… Remedy: Honda will notify owners, and dealers will replace the driver's air bag inflator with an alternate inflator, free of charge. The recall began April 10, 2019. Honda owners may…
Honda (American Honda Motor Co.) is recalling certain model year 2007-2011 Honda CR-V, 2011-2015 CR-Z, 2010-2014 FCX, and Insight, 2009-2013 Fit, 2013-2014 Fit EV, 2007-2014 Ridgeline, 2013-2016 Acura ILX, 2013-2014… Remedy: Honda will notify owners, and dealers will replace the inflator, free of charge. The recall began March 2017. Owners may contact Honda customer service at 1-888-234-2138. Honda's…
Showing 5 of 55 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| B18-020 | 2026-02-28 | Air Bags | Service Bulletin - Warranty Extension: Customer Support Program For Driver's Airbag… |
| B23040A | 2023-05-17 | Electrical System | Service News - The navigation clock and date are incorrect. This is due to a limited GPS… |
| BPO05022022901 | 2022-05-02 | Equipment | Dealer message - American Honda is investigating a potential quality concern with RDX… |
| B18-020 | 2022-04-08 | Air Bags | Service bulletin - This bulletin is a notification of a class action settlement relating… |
| B18-020 | 2022-03-01 | Equipment | Service Bulletin - This bulletin is a notification of a class action settlement relating… |
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.
5.0 qt of 5W-30. ONLY USE MOTOR OIL MEETING ACURA SPECIFICATION HT0-06 OR EQUIVALENT, per the factory manual.
NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 17 city / 22 highway / 19 combined mpg.