Mazda 6 2009-2013: engines, fuel economy, problems, pros and cons, what to look for when buying used

Updated: October 21, 2019
2012 Mazda 6
2012 Mazda 6, Photo: Mazda

A very few family sedans can be described as "fun to drive" and Mazda 6 is one of them. The 6's optional 3.7L V6 engine tops most of the family sedans in horsepower and torque. The 6 handles very well and even got the perfect 5-star rollover resistance rating from the NHTSA.

The sporty styling makes it stand out from the crowd. Mazda 6 is very roomy and well-equipped. The Interior quality is good too. The trunk is huge (16.6 cu. ft) and the 60/40 split seatbacks fold down flat with the trunk floor. Interestingly, the North American Mazda 6 is longer and wider than the same model sold in other markets. Pre-owner Mazda 6 models are not very expensive. The 6 is fairly reliable and doesn't cost a lot to maintain. Are there any downsides? How is the gas mileage? What are the common problems? Let's take a closer look, starting from the engines.

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Engines: The 170-hp 2.5-liter inline-4 DOHC is available with a 6-speed manual or 5-speed automatic transmission. Overall, it's a proven reliable workhorse; it's used in many Mazda and Ford vehicles.

Mazda 6 interior
2011 Mazda 6 V6 interior
Mazda 6 interior
2013 Mazda 6 base

The 272-hp 3.7-liter Ford-sourced V6 comes only with the 6-speed automatic. This is a solid engine; the only problem is the location of the water pump. If a water pump fails, it will be expensive to replace, as it's driven by a timing chain. Both the 4-cylinder and V6 engines have a maintenance-free timing chain; there is no timing belt to worry about.

Handling and ride: Handling is where the Mazda 6 excels. It holds the road well with minimal body roll in corners. The steering is precise and well-weighted. The ride is firm but compliant. The 2.5L engine is overall a decent performer and pulls lively off the line. The 3.7L V6 is very strong. The 0-to-60 time for the V6 is just over 6.0 seconds. The V6 Mazda 6 feels very solid and exceptionally stable on the road. On the downside, some road and tire noise are noticeable. 

Safety: Anti-lock brakes (ABS) and stability control (DSC) are standard. Late models offer an optional Blind Spot Monitoring system that warns the driver about vehicles approaching from the rear to the left and right of the car. The 2009 and 2010 Mazda 6 have earned a perfect five-star rating in the NHTSA crash tests, including five stars for rollover resistance. In the new, more rigorous crash tests introduced by the NHTSA from 2011, the 2012 and 2013 Mazda 6 scored 4 stars overall.

Problems: Many owners report that the front brakes wear fast. Corrosion at the battery terminals can cause some electrical issues.

Mazda 6 3.7L V6 engine
Mazda 6 3.7L V6 engine

There are some reports about minor issues with the push-button start system where a faulty keyless remote transmitter may cause intermittent no-start condition. Other electrical issues are not uncommon.
A faulty purge valve can cause the check engine light to come on.
Several owners mentioned that the dashboard material becomes very soft and 'melts' on hot sunny days.
A faulty lock actuator at one of the doors can cause an alarm to go off randomly. Your dealer can check which door has triggered the alarm and possibly replace the door lock actuator.
Low-beam headlight bulbs go bad often.
Corroded valve stems of the tire pressure sensors can cause tires to lose air. There are some reports on rust damage to chassis components underneath the car. This issue will require an inspection by your mechanic on the lift. In September 2018, Mazda issued the recall (NHTSA Campaign Number: 18V631000) for the front cross-member (subframe) corrosion in the 2009-2010 Mazda 6. Check for recalls at the NHTSA website

EPA Fuel Economy: mpg
L/100 km
2011-2012 Mazda 6 4-cyl, auto 22/31 10.7/7.6
2009-2011 Mazda 6 4-cyl, auto 22/30 10.7/7.8
2013 Mazda 6 4-cyl, auto 22/30 10.7/7.8
2011-2013 Mazda 6 4-cyl, manual 21/30 11.2/7.8
2009-2010 Mazda 6 4-cyl, manual 20/29 11.8/8.1
2011-2013 Mazda 6 V6, auto 18/27 13.1/8.7
2009-2010 Mazda 6 V6, auto 17/25 13.8/9.4

Fuel economy: The 4-cylinder Mazda 6 gas mileage is about average for the class. With a 2.5L 4-cylinder engine and an automatic transmission Mazda 6 gets up to 444 miles (710 km) on a 18.5-gallon tank (70 liters). The V6 is even thirstier. See the table.

Pros: Sporty styling, handling, interior space, large trunk, reasonable price on the used car market, easy to modify.

Cons: Average fuel economy, seats are firm, road noise, front brakes wear fast, electrical issues.

Overall: Mazda 6 is a sporty family sedan. If all the recalls have been completed, and the vehicle is properly inspected by an independent mechanic, a used Mazda 6 is an option worth considering. We recommend the 4-cylinder engine; it's simple and can last long with proper maintenance.

Similar cars: Competitors include Toyota Camry, Nissan Altima, Honda Accord, Chevrolet Malibu, Ford Fusion and Hyundai Sonata. The Camry is more reliable and is known for its very comfortable and quiet ride. It also offers better highway gas mileage. Nissan Altima handles well too and gets better city gas mileage, but it's a bit smaller. Honda Accord is an overall excellent car, but it's priced a bit higher. Chevrolet Malibu is also better on gas; it handles well and rides comfortably, but the reliability is not better than average.

What to look for when buying a used Mazda 6: It's a good idea to check the history report to avoid cars that have been previously flooded or damaged. Check if all the electrical accessories work. Watch out for rust at the bottom of the doors (on the inner side) and underneath the car. If you can arrange for the pre-purchase inspection in the shop, ask to check the vehicle underneath for rust, oil leaks and other problems. In the Rust Belt, there is a risk of expensive rust damage to chassis components. Test the controls on the steering, audio system, power locks and the air conditioner. See if the driver's seat is comfortable.


When checking under the hood, see if the battery terminals are not corroded. Check the oil level and condition; low oil level may indicate that the engine consumes oil. Avoid the car if there is blue smoke from the exhaust. During the test drive, see if the car holds the road well and doesn't pull to one side or another. See if the transmission shifts smoothly. Read more: How to inspect a used car - illustrated guide.

Maintenance: For US and Canada, Mazda recommends using 0W-20 synthetic oil in the 2011 and newer 4-cylinder models. Tires will last longer if rotated regularly; radial and directional tires are rotated front to rear on the same side. Radial tires have the letter “R” in the tire size; for example, P215/55 R17 are radial tires. When you have your oil change done, ask to check the battery terminals. In some cars, the electrolyte leaking out from the battery can damage the battery cable, which is expensive to replace. A cabin air filter needs to be replaced every 2 years or 25,000 miles (40,000 km). Have your brakes checked regularly, as the front brakes are known to wear prematurely.

You might also be interested:

Recalls: Safety Recalls - NHTSA or Transport Canada - Motor Vehicle Safety Recalls.
Mazda 6 club - plenty of DIY instruction and other information.
Mazda USA - download owner's manual; maintenance schedule, references.

2012 Mazda 6 specifications

Overall length:
Overall width:
Overall height:

193.7 in (4,920 mm)
72.4 in (1,840 mm)
57.9 in (1,470 mm)
109.8 in (2,790 mm)

Turning circle: (curb to curb)

35.4 ft (10.7 m)

Curb weight: 3,329 lb. (1,510 kg) /4-cylinder, auto/

Mazda 6i (4-cylinder):

Mazda 6s (V6):

2.5-liter DOHC 16-valve 4 cylinder
170 hp @ 6,000 rpm
167 lbs-ft @ 4,000 rpm

3.7-liter DOHC 24-valve V6
272 hp @ 6,250 rpm
269 lbs-ft @ 4,250 rpm

Recommended Fuel: Regular unleaded

Fuel Tank Capacity:

18.5 US Gal. (70.0 L)

Engine oil capacity:
With oil filter change:
2.5L 4-cylinder:
3.7L V6:

5.3 US qt. (5.0L)
5.5 US qt. (5.2L)

By Staff