Introduced in 2002, the Mazda 6 midsize sedan was the successor to Mazda's long-running 626 lineup. One of the first models to be marketed under Mazda's "stylish, insightful and spirited" philosophy, the Mazda 6 gained praise for its sporty design and handling. If you're planning to get one yourself, you're also probably wondering: how reliable is a used Mazda 6?
Are Mazda 6s Reliable?
Mazda is well regarded for making reliable vehicles, and the Mazda 6 lives up to that reputation with consistently positive reliability scores across the industry. JD Power gave the Mazda 6 a score of 84/100 for reliability, while RepairPal hands it an above-average score of 4/5 and ranks it 6th in the midsize car segment for reliability. Reviewers also noted the durability of the Mazda 6's mechanical and electrical components, although there were some sporadic issues with the bodywork and brake systems.
As for upkeep, the Mazda 6 is relatively cheaper to maintain at only $480 per year, according to RepairPal. In comparison, the average maintenance cost for midsize cars is around $520 per year.
What Are the Most Common Issues with Mazda 6s?
Let’s discuss some of the typical issues you may encounter with a Mazda 6, and which model years are affected.
Faulty Cooling Fan Control Module
The cooling fan control module in some Mazda 6 models has been known to fail prematurely, causing erratic engine cooling fan operation that can lead to overheating. This is usually resolved by replacing the broken control module.
Customers have routinely reported overheating problems on Mazda 6 platforms for many other reasons as well, most of them due to wear or clogged components.
Affected Model Years:
- 2003
- 2004
- 2005
- 2006
- 2007
- 2008
- 2009
- 2010
- 2012
Transmission Whining Noise
Mazda 6 transmissions are especially susceptible to whining noise due to issues with the torque converter needle bearings and excessive gear wear that produces noise, especially in the lower gears.
Affected Model Years:
- 2003
- 2006
- 2008
- 2014
- 2016
Ticking Noises from the Engine
An unusually loud ticking noise from the engine has been reported across multiple Mazda 6 model years, especially when the engine is still cold. This has been traced back to the hydraulic valve lash adjusters getting stuck.
Replacing the lash adjusters normally fixes this issue.
Affected Model Years:
- 2003
- 2004
- 2005
- 2006
- 2007
- 2008
- 2009
- 2010
- 2014
Soot in the Engine Intake Valve
The intake shutter valve in selected Mazda 6s has been known to accumulate soot over time and affect engine performance. The intake shutter valves on a Mazda 6 (when equipped) are part of the Variable Tumble Control System (VTCS) or Variable Intake-Air System (VIS), which is designed to optimize combustion, improve torque, and reduce emissions. Affected vehicles must have their intake shutter valves cleaned out and the powertrain control module (PCM) software updated to resolve this issue.
Affected Model Years:
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
Broken Brake Vacuum Pump
The brake vacuum pump in some Mazda 6 model years is prone to failure, causing a significant drop in braking performance. In such cases, the pump must be replaced as soon as possible.
Affected Model Years:
- 2012
- 2013
- 2014
- 2015
- 2016
Engine Stalling
Mazda has issued at least two recalls related to engine stalling. The first one refers to the engine being unable to start properly due to a start-stop system error, while the second points to a fault in the fuel injection system. In both cases, owners of affected vehicles are instructed to have the PCM software updated at the dealership to prevent future issues.
Affected Model Years:
- 2012
- 2013
- 2014
- 2015
- 2016
Stuck Door Handle
Nearly 30,000 vehicles were affected by a Mazda 6 recall due to an issue with the outer door handles. The handles have been reported to stick and prevent the door from latching properly, causing the door to swing open when the vehicle is in motion. Mazda has instructed dealers to inspect the door handles of affected vehicles and make necessary repairs or replacements free of charge.
Affected Model Years:
- 2009
What Are the Best Model Years for the Mazda 6?
The best Mazda 6 year is hard to pin down, as there have been quite a few exceptional models produced in its 22-year production run. The following are what industry experts and owners consider to be among the best years for Mazda 6 in terms of reliability, technology, and overall value.
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
FAQ
How many miles can a Mazda 6 last??
The Mazda 6 can last anywhere between 200,000 and 300,000 miles or the equivalent of 13 to 20 years of driving. In comparison, most midsize cars have a lifespan ranging between 150,000 to 200,000 miles.
Why did Mazda discontinue the Mazda 6?
The Mazda 6 was discontinued in the US in 2021 and in Japan in 2024, but Mazda has never officially released an explanation as to why. However, it is speculated that the Mazda 6 was shelved due to shifting market trends and poor sales. The sedan segment has been in steady decline for years, with some manufacturers dropping all of their sedan models from their current lineup. The growing demand for SUVs and crossovers has also made it harder for smaller sedans like the Mazda 6 to compete for new customers.