How often should I change the timing belt on my Acura MDX?

The typical timing belt interval for many Acura MDX models is about 105,000 miles (roughly 170,000 kilometers) or 7 years, whichever comes first. Some MDX engines use a timing chain instead of a belt, which does not have a fixed mileage-based replacement interval. Always verify with your owner's manual or dealer for your specific vehicle.

Belt vs. chain and model coverage

Across the MDX lineup, the drivetrain configuration has varied by generation. Some models use a timing belt, while others use a timing chain. Because intervals and maintenance practices change with engine type and year, it’s essential to confirm what your particular MDX uses before planning a replacement schedule.

How to confirm belt or chain on your MDX

Check the engine cover or service documentation for wording such as timing belt or timing chain, review the owner’s manual maintenance schedule, or ask a dealer/service advisor with your VIN. A qualified technician can also identify the component during a visual inspection.

Recommended replacement interval for timing belts

If your MDX uses a timing belt, follow the standard mileage/time guidelines and plan replacements proactively to avoid a belt failure that could cause severe engine damage. The following points summarize common practice for belt-driven MDX engines.

Before you review the specifics, note that intervals can vary by generation and engine type. The following guidelines reflect typical practice for belt-driven MDX models.



• Replace the timing belt at about 105,000 miles (approximately 170,000 kilometers) or 7 years, whichever comes first.


• Replace the water pump, tensioner, and idler pulleys at the same time as the belt to minimize future labor costs and potential leaks.


• Use an OEM or OEM-recommended timing belt kit, and have the installation performed by a qualified technician to ensure proper alignment and tension.


• Inspect the belt for signs of wear between changes—cracks, fraying, glazing, missing teeth, or oil contamination warrant earlier replacement.


• If your MDX uses a timing chain, there is no fixed mileage-based replacement interval; instead, have the chain and related components inspected at routine service and address any wear or tensioner issues as recommended by your technician.

Concluding this section, follow the manufacturer’s guidance for your specific model year and engine configuration. When in doubt, err on the side of a scheduled replacement to protect the engine.

What to replace at the same time

Replacing related components alongside a timing belt (or during a belt-driven service) helps prevent future failures and reduces overall labor costs later. The following list covers common supplementary components many technicians recommend changing at the same time.

Before listing, note these are typical recommendations; your vehicle may have variations based on year and engine. Always consult your service advisor for a precise plan.



• Water pump


• Timing belt tensioner and idler pulleys


• Thermostat (optional but commonly recommended)


• Coolant (drain and refill with the correct specification)


• Seals and gaskets that surround the timing cover

Concluding this section, performing these related replacements at the same time helps ensure reliability and can prevent repeat labor charges from later, separate failures.

How to verify your engine configuration and maintenance plan

To avoid misjudging your replacement needs, verify the following steps with your MDX:

• Check the owner’s manual for the exact interval and whether your engine uses a belt or chain.

• Confirm via VIN lookup with an Acura dealer or a trusted service shop, which will specify the correct maintenance schedule for your vehicle’s build date and engine code.

• If you’re approaching the 105,000-mile mark or the 7-year threshold, schedule a belt inspection or replacement with a qualified technician, even if there are no symptoms.

Summary

In short, most belt-driven Acura MDX engines require timing belt replacement around 105,000 miles or 7 years, whichever comes first, often including replacement of the water pump and tensioner pulleys at the same time. Some MDX models use a timing chain instead of a belt, which doesn’t have a fixed replacement interval but should be inspected regularly. Always verify your specific model’s configuration and maintenance schedule in the owner’s manual or with an Acura dealer, and plan preventive service to protect the engine and avoid costly repairs.

How long do Acura MDX timing belts last?

Under normal driving conditions, a timing belt will last for seven to ten years. The replacement process will take between three and six hours to complete, but you'll only have to replace the belt once or twice over the lifetime of your Acura.

Does the Acura MDX have a timing chain or belt?

The Acura MDX uses a timing belt in older models but has a timing chain in many recent generations. To be certain, check your specific model year in the owner's manual or consult a mechanic, as a timing chain typically lasts for the life of the engine and does not require replacement unless there is an issue, while a timing belt is a maintenance item with a recommended replacement interval, usually around 60,000 to 100,000 miles. 
Timing belt vs. timing chain

• Timing Belt: A rubber belt that needs periodic replacement to prevent catastrophic engine damage. 
  • Cost: Replacement can be expensive, typically costing between $1,100$ 1 comma 100$1,100 and $1,700$ 1 comma 700$1,700 or more due to the labor involved. 
  • Service: It's crucial to follow the recommended replacement schedule in your owner's manual, usually between 60,000 and 100,000 miles. 
• Timing Chain: A metal chain that connects the crankshaft and camshafts. It is much more durable and generally does not need to be replaced during the engine's life unless it becomes damaged. 

How to check your MDX

• Check your owner's manual: This is the most reliable source of information for your specific vehicle's maintenance schedule and components. 
• Consult a mechanic: A qualified mechanic can visually inspect the engine and confirm whether your MDX has a timing belt or chain.
• Note the model year: While older MDX models use a timing belt, many newer models, especially those with certain engine types, may use a timing chain instead. 

What year to stay away from Acura MDX?

You should generally avoid the 2001, 2003, 2004, 2010, and 2014 Acura MDX models due to recurring issues with their transmissions and other systems. Additionally, some 2016–2020 models with the 9-speed transmission had shift issues. Years to consider for better reliability are 2007–2009 and 2017 and later. 
Years to avoid

• 2001, 2003, 2004: These years are frequently mentioned for transmission problems. 
• 2010: This year is cited for transmission issues and potential oil burning problems. 
• 2014: Cited for transmission problems and user-unfriendly infotainment systems. 
• 2016–2020: Models from this range, especially those with the 9-speed transmission, can have shifting issues. 

Years to consider

• 2007–2009: These are noted as being among the more reliable models in the second generation. 
• 2017 and later: These models are generally considered more reliable, with improved technology and performance. 
• 2022 and newer: The new generation is showing positive early reliability and has an improved 10-speed transmission. 

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

The cost to replace an Acura MDX timing belt typically ranges from $1,100 to $1,700, though prices can vary depending on the model year, the service center (dealer vs. independent shop), and whether other parts like the water pump are replaced at the same time. It is recommended to replace the timing belt every 60,000 to 100,000 miles or every 7 to 10 years. 
You can watch this video to learn about the symptoms of a bad timing belt: 54sEasyAutoFixYouTube · Aug 24, 2022
Factors influencing the cost

• Model Year: Different model years can have different labor and parts costs. 
• Location and Service Type: Dealerships, which use manufacturer-recommended parts, may have higher labor rates than independent mechanics, who might use aftermarket parts. 
• Additional Services: It is common and recommended to replace the water pump, tensioners, and idler pulleys when the timing belt is replaced, as they are often the same parts that fail and are difficult to access once the belt is off. 

What to expect

• Parts: The cost of the parts kit (which often includes the timing belt, water pump, and tensioners) can be around $450. 
• Labor: The labor is often the most significant portion of the cost because replacing the belt is labor-intensive, requiring the removal of many engine components to gain access. 
• Total Estimate: A full timing belt service, including the water pump and other related components, is estimated to cost between $1,100 and $1,700 or more, depending on the factors above. 

When to replace

• Acura generally recommends replacing the timing belt every 60,000 to 100,000 miles or every 7 to 10 years, whichever comes first. 
• Even if the mileage is low, the belt can degrade over time, so it's crucial to adhere to the time-based recommendation. 
• If the timing belt breaks, it can cause catastrophic engine damage, potentially leading to repairs costing over $2,000.