When should an Acura timing belt be replaced?

Most Acura models that still use a timing belt should have it replaced around 60,000 to 105,000 miles, or roughly every 5 to 7 years, whichever comes first. Some newer engines use a timing chain instead, which does not have a fixed mileage-based replacement interval. Always verify against your vehicle’s owner’s manual or with an Acura dealer for your exact model and year.

Understanding the replacement interval

Below are the typical windows you’ll see in guidance for Acura vehicles with timing belts. The precise interval depends on the engine design, model year, and driving conditions.

• 60,000 miles (96,000 km) as a common lower bound for several older Acura belt-driven engines


• 90,000–105,000 miles (145,000–168,000 km) for many models built in the 2000s–2010s


• 5–7 years as a general time-based window to account for belt aging, even if mileage is lower

In practice, many Acura owner manuals list a belt replacement range of 60,000–105,000 miles or a 5–7 year limit. Because engines vary, always confirm the interval for your exact model and year with the owner’s manual or a dealer.

Model-specific guidance and confirmation

Engine families and configurations change over time. Some Acura models have moved from timing belts to timing chains in newer designs, which affects replacement planning. The safest approach is to verify your exact configuration using your VIN, engine code, or the official manual.

How to verify belt vs. chain for your Acura

Check the owner’s manual or service information for your specific model/year. If you don’t have the manual, contact an Acura dealer or a trusted mechanic who can identify your engine code from the VIN and confirm whether it uses a belt or a chain and the recommended service interval.

Signs your timing belt may be nearing end of life

Beyond mileage and age, certain symptoms can indicate a belt pre-emptively needs attention. If any of these occur, schedule inspection promptly to avoid a potential failure.

• Cracked, frayed, or missing teeth on the belt


• Oil leaks near the belt area or onto the belt itself


• Squealing, ticking, or chirping noises from the front of the engine


• Engine misfire or rough running, especially after starting or at certain RPMs


• Difficulty starting, engine stalls, or a no-start condition

When you observe these signs, do not delay in having a professional inspection. A failing belt can cause catastrophic engine damage on interference engines, making early replacement critical.

What to expect during a timing belt replacement

Replacing a timing belt is a comprehensive service that often includes more than just the belt itself. The exact scope varies by engine, but the typical work includes parts replacement, cooling system checks, and timing verification.

• A timing belt kit that includes the belt, tensioner, and idler pulleys


• Water pump replacement on many engines, since it is often driven by the belt and can fail soon after belt replacement


• Replacement of seals and gaskets as needed to prevent leaks


• Coolant drain and refill (coolant flush or replacement) to match factory specifications


• Timing check and belt alignment performed by a qualified technician to ensure proper engine timing

Cost and duration vary by model, region, and whether the water pump and other components are included. Ballpark estimates commonly range from several hundred to over a thousand dollars, with labor often taking several hours. Always obtain a detailed quote for your exact vehicle.

Summary

For Acura models that still rely on a timing belt, plan replacement within the 60,000–105,000 mile window or about 5–7 years, whichever comes first, and confirm with your manual or dealer for your specific vehicle. If your model uses a timing chain, routine belt replacement is generally not required, but chains can wear or develop tensioner issues over time and should be inspected. Regular maintenance and early attention to signs of wear can prevent costly engine damage and keep your Acura running smoothly.

Do I really need to replace the timing belt at 100k miles?

Replace the timing belt somewhere near 100,000 miles or whatever distance is given in the manual for the car. If you don't replace timing belts, they will eventually break, and there is a good chance that the valves will hit the pistons and there will be major engine damage.

How much does it cost to replace a timing belt on an Acura?

The cost to replace your Acura MDX timing belt will vary depending on your MDX's model year, but is often in the neighborhood of $1,100 - $1,700. While a somewhat pricey repair, you luckily don't have to get the timing belt replaced often.

How long do Acura timing belts last?

As a precaution, Acura recommends changing a timing belt many thousands of miles before the part reaches any risk of failure. Generally, this replacement interval is between 50,000 and 100,000 miles.

What year of Acura RDX to stay away from?

The Acura RDX years to avoid are generally the 2015, 2019, and 2021 models due to significant issues. The 2019 is often cited as the worst, especially the first model year of the third generation, with problems like engine stalling and power loss. Other years with notable problems include the 2013, 2014, and 2018. 
This video discusses common problems with the Acura RDX, including potential engine, transmission, and electrical issues: 59sHey, ask your dadYouTube · May 24, 2025
Years to be cautious about

• 2013-2015: These years can have transmission issues like rough shifting and slipping, and some models may have engine oil leaks. 
• 2015: In addition to transmission problems, this model year had issues with airbags and the soy-based wiring insulation attracted animals. 
• 2018: Reported transmission problems and potential engine issues like head gasket or timing chain problems have been noted. 
• 2019: This is widely considered the least reliable model year, particularly because it was the first year of a new generation. Owners have reported engine stalling, power loss, and issues with the rear glass shattering. 
• 2021: This year experienced issues with the transmission, brakes, and engine stalling due to a potential intercooler design flaw that could let moisture into the engine. 

What to do if buying used

• Thoroughly inspect any used model for the specific issues mentioned above. 
• If considering one of these years, have a trusted mechanic perform a pre-purchase inspection. 
• Check for service records and recall history. 

This video demonstrates how to inspect an Acura RDX for potential issues, including engine oil leaks and suspension problems: 58sBCauto_YouTube · Aug 21, 2024