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How long will a 2020 Chevy Blazer last?

A well-maintained 2020 Chevy Blazer is realistically able to reach about 200,000 miles, with many examples lingering in the 150,000–200,000 mile range and some exceeding that amount.


What determines the Blazer's lifespan


Durability for a modern SUV depends on how well it’s cared for, how it’s driven, and the operating environment. The following factors most strongly influence how long a 2020 Blazer will stay on the road.



  • Maintenance history and adherence to service intervals, including oil changes, fluid replacements, belt and hose checks, brake service, and tire care.

  • Driving conditions and climate, such as frequent short trips, heavy traffic, extreme heat or cold, and towing within or beyond capacity.

  • Powertrain and component wear, including the 3.6L V6 or 2.0L turbo engines and the 9-speed automatic transmission, which benefit from timely maintenance and fluid changes.

  • Corrosion and underbody wear, particularly in areas with road salt or high humidity where protective measures matter.

  • Repair access and costs, which can affect how promptly issues are fixed and whether owners pursue preventive maintenance.

  • Accidents and recall status; any significant damage or unresolved recalls can impact long-term reliability.


In practice, many 2020 Blazer owners report reaching the 150,000–200,000 mile mark with consistent maintenance, and some surpass 200,000 miles when problems are addressed promptly and care is sustained.


Tips to maximize longevity of your 2020 Blazer


Proactive maintenance and mindful driving are the best strategies to extend the vehicle’s useful life.



  • Follow the factory maintenance schedule, including regular oil changes, filter replacements, brake checks, tire rotations, and fluid top-offs.

  • Use the recommended fluids and quality filters; use Dexos-approved oil if required and change transmission and coolant fluids at the suggested intervals.

  • Stay current with recalls and service campaigns; diagnose and repair fault codes promptly with a qualified technician.

  • Monitor the cooling system, radiator, and hoses; address overheating or coolant leaks quickly to prevent engine damage.

  • Drive smoothly and avoid excessive towing or hard acceleration, which can accelerate wear on the engine and transmission.

  • Protect against rust and corrosion by regular washing (including undercarriage) in winter climates and in salty environments.

  • Keep tires and brakes in good condition, ensure proper alignment, and replace worn components to reduce stress on drivetrain parts.


By staying on top of maintenance and addressing issues promptly, you maximize the Blazer’s chances of lasting well into its second decade of service.


Summary


The longevity of a 2020 Chevy Blazer hinges on maintenance quality, driving habits, and environmental conditions. With diligent care, expect roughly 150,000–200,000 miles, with some vehicles pushing beyond 200,000 miles. Regular service, quality parts, and prudent operation are the keys to a longer life.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.