VTEC Solenoid / Oil Pressure Screen Clog
medium- Typically appears
- 80–150k mi
- Estimated repair
- $150 – $400
2006 Acura
RSXCoupe
Coupe
The 2006 Acura RSX is the final model year of Honda's sport compact coupe sold under the Acura badge in North America. Built on the same platform as the Honda Civic Si, it came in two flavors: the base 2.0L i-VTEC (160 hp) and the Type-S with a higher-revving 2.0L i-VTEC (210 hp). Both are smooth, rev-happy engines with Honda's legendary durability baked in. The RSX was discontinued after 2006, making this the last of the line — parts availability is still solid thanks to shared Honda Civic/Integra architecture. The RSX earned a reputation as a driver's car — precise steering, a well-balanced chassis, and a high-revving engine that rewards spirited driving without being impractical. Fuel economy is genuinely good for a sport coupe. The interior is snug but thoughtfully designed, and build quality reflects Acura's attention to fit and finish in this era. At nearly 20 years old, most RSXs on the road today have high mileage and some history in the enthusiast community — modifications, track days, and hard driving are common. A clean, stock example is increasingly rare and worth preserving. Rust is the top concern on Wisconsin examples, and a thorough undercarriage inspection is non-negotiable before purchase.
Reliability
4/5
Verified data
Specs shown for RSX — the most common configuration.
Other trims may vary in engine, drivetrain, or fuel economy. Sign in to see your vehicle's exact specs.
Engine
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Drivetrain
FWD
Fuel
Gasoline
MPG
24 city / 31 hwy / 26 combined
Seats
—
Doors
—
Body
Subcompact Cars
Overview
AI-curatedThe 2006 Acura RSX is the final model year of Honda's sport compact coupe sold under the Acura badge in North America. Built on the same platform as the Honda Civic Si, it came in two flavors: the base 2.0L i-VTEC (160 hp) and the Type-S with a higher-revving 2.0L i-VTEC (210 hp). Both are smooth, rev-happy engines with Honda's legendary durability baked in. The RSX was discontinued after 2006, making this the last of the line — parts availability is still solid thanks to shared Honda Civic/Integra architecture. The RSX earned a reputation as a driver's car — precise steering, a well-balanced chassis, and a high-revving engine that rewards spirited driving without being impractical. Fuel economy is genuinely good for a sport coupe. The interior is snug but thoughtfully designed, and build quality reflects Acura's attention to fit and finish in this era. At nearly 20 years old, most RSXs on the road today have high mileage and some history in the enthusiast community — modifications, track days, and hard driving are common. A clean, stock example is increasingly rare and worth preserving. Rust is the top concern on Wisconsin examples, and a thorough undercarriage inspection is non-negotiable before purchase.
Known for
- Rev-happy Honda i-VTEC engine with strong top-end power
- Sharp, communicative handling and FWD chassis balance
- Excellent long-term reliability when properly maintained
- Shared parts bin with Honda Civic — affordable, widely available components
- Popular with enthusiasts, leading to heavily modified used examples
Best for
- Drivers who enjoy a sporty, engaging commuter
- Budget-conscious buyers who want Acura reliability
- Someone comfortable doing their own maintenance or working with an independent shop
- Daily driving with occasional spirited weekend use
Watch for
- Rust on sills, subframe, and rear wheel arches — especially on Upper Midwest examples
- Modified or tracked examples with worn suspension and clutch components
- Neglected VTEC solenoid / oil pressure screen leading to top-end damage
- Aging airbag inflators — verify Takata recall status before purchase
- Worn or slipping 6-speed manual clutch on high-mileage Type-S models
Common issues by mileage
6 knownCamshaft Position / VTC Actuator Issues
medium- Typically appears
- 100–180k mi
- Estimated repair
- $300 – $900
Oxygen Sensor Failure (upstream / downstream)
medium- Typically appears
- 90–150k mi
- Estimated repair
- $120 – $350
Rear Wheel Arch and Undercarriage Rust
high- Typically appears
- All mileages on Midwest / salt-road cars
- Estimated repair
- $500 – $3,500
Worn Front Suspension Bushings and Ball Joints
high- Typically appears
- 80–140k mi
- Estimated repair
- $250 – $800
Manual Transmission Synchro Wear (Type-S)
medium- Typically appears
- 100k+ mi
- Estimated repair
- $800 – $2,500
Maintenance schedule
- 1 Every 5,000 miles or 6 months, whichever comes first Engine oil and filter change
The K-series VTEC and VTC systems are oil-pressure dependent. Short-changing oil changes is the single most common cause of expensive top-end repairs on this engine. Use 5W-20 meeting API SN or better. OEM filter part 15400-PLM-A02 or equivalent quality filter.
- 2 Every 30,000 miles Manual transmission fluid change
Honda MTF is the spec fluid. Using the wrong fluid causes notchy shifting and accelerates synchro wear. Don't skip this on any used RSX purchase — consider it a first-order service.
- 3 Every 30,000 miles Automatic transmission fluid change (if applicable)
Honda ATF-Z1 or current Honda DW-1 spec. The automatic is generally robust but fluid neglect leads to shudder and slippage over time.
- 4 Every 60,000 miles or if cold-start rattle is noticed Timing chain and VTC actuator inspection
The K20 uses a timing chain (not a belt), so there's no scheduled replacement — but the VTC actuator rattles on startup when oil is old or low. Address promptly to prevent chain guide wear.
- 5 Every 30,000 miles (iridium plugs; 60k if OEM spec is met) Spark plug replacement
The i-VTEC engine is sensitive to plug condition at high RPM. Worn plugs cause misfires that are more noticeable above the VTEC crossover point.
- 6 Every 2 years regardless of mileage Brake fluid flush
Glycol-based brake fluid absorbs moisture over time, lowering boiling point. Wisconsin winters with heavy braking on snow and summer spirited driving both stress the brake system. This is an easy, low-cost service to keep current.
- 7 Every fall before winter salt season Undercarriage rust inspection and treatment
Lake Geneva roads get heavy salt. Annual inspection of the subframe mounts, rocker panels, and rear arches lets you catch surface rust before it becomes structural. Touch up exposed metal and consider an annual undercoating refresh on older cars.
- 8 Every 60,000 miles or if P0026/P0027 codes appear VTEC solenoid screen cleaning
A clogged oil screen is a common, cheap fix that prevents an expensive VTEC system repair. Easy to access during an oil change interval.
Always defer to the manufacturer's service manual for warranty-mandated intervals.
Cost of ownership
Annual maintenance
$400 – $900
Fuel
Regular 87-octane gasoline. At 26 MPG combined and ~15,000 miles/year, expect roughly $1,500–$1,900/year at current Midwest pump prices.
Insurance
Sport coupe classification raises rates slightly versus a sedan, but the RSX's low theft profile and age keep premiums moderate. Expect $900–$1,500/year for a driver with a clean record, depending on coverage level.
The RSX is one of the more economical sport coupes to own at this age. Parts are plentiful and affordable because of the Honda Civic platform overlap. Routine maintenance is inexpensive at an independent shop. The main cost risk is deferred maintenance catching up — especially VTEC/VTC-related engine work, rust repair, and suspension refresh on high-mileage examples. A well-maintained car kept up on oil changes and undercarriage care can go another 100k miles without major expense.
Seasonal care
Lake Geneva, WI Winter
- Switch to a full-synthetic 5W-20 if not already running it — it flows faster on sub-zero Wisconsin mornings, protecting the VTEC and VTC systems during critical cold starts.
- Test the battery before November. The RSX's stock battery tray fits a group 51R; at 6+ years old, replace it proactively. Cold cranking amps drop sharply below 20°F.
- Inspect and treat undercarriage rust spots before salt season begins. Pay particular attention to rear wheel arches, sill seams, and subframe mounting points.
- Top off the windshield washer reservoir with a -20°F or colder rated fluid — standard summer fluid freezes in the nozzles and can crack the reservoir.
- Consider a dedicated set of winter tires on steel wheels. The RSX's sporty all-season tires lose significant grip below 40°F; this car's FWD helps but won't overcome a cold, hard tire compound.
- Keep the fuel tank at least half full during cold snaps to reduce moisture condensation in the tank and fuel line.
Summer
- Check tire pressure monthly — ambient temperatures rising 30°F from spring to summer add roughly 3–4 PSI. Over-inflation wears centers and reduces grip.
- Inspect the A/C system performance and cabin air filter before peak heat. The RSX's A/C is compact and efficient but the cabin heats quickly when parked — a functioning system matters.
- Check coolant concentration and condition. Degraded coolant loses its corrosion inhibitors and can cause issues in the aluminum-heavy K-series engine.
- Inspect brake pads and rotors if any spirited summer driving is planned. Heat soak after hard braking on a sport coupe accelerates pad wear.
- Check that the radiator and condenser fins are clear of debris, especially if the car is driven on rural Wisconsin roads where bugs and debris accumulate quickly.
Comparable vehicles
2006 Honda
Civic Si
Shares the K20 engine family, similar sport coupe mission and price point, slightly more practical with a wider dealer network. The RSX and Civic Si were platform siblings — parts overlap is very high.
2006 Mazda
Mazda3
Similar FWD sport compact price bracket with a strong reliability record. The Mazdaspeed3 variant adds turbocharged performance for a similar total cost of ownership profile.
2006 Toyota
Celica
Another Japanese sport coupe of the same era with a high-revving 4-cylinder engine and enthusiast following. The Celica was discontinued in 2005, so used examples are in the same age and price band.
No catalog match
2006 Volkswagen
GTI
The Mk5 GTI offers similar sport coupe driving dynamics with a turbocharged 2.0T, but higher long-term maintenance costs and more complex electronics versus the straightforward RSX.