All three Mazda 6 trim levels come with the same engine. As this component relies on SkyActiv technology, it is able to deliver top performance and efficiency, providing the perfect balance for most drivers. Despite there only being one engine choices, there are several transmissions available, meaning that the fuel economy for the SkyActiv engine will vary.

Mazda 6 Engine Review by the Numbers

The engine in the Mazda 6 is a SkyActiv-G 2.5-liter DOHC 4-cylinder with 16 valves. It also features direct injection and variable valve timing to help improve fuel economy and power output. The engine has a displacement of 2,488 cc and a truly impressive compression ratio of 13.0:1, a number that is nearly unheard of for mass-produced engines in this segment. The 2.5-liter engine generates 184 horsepower at 5,700 revolutions per minute and 185 pound-feet of torque at 3,250 rpm.

Mazda 6 Engine Review of SkyActiv Technology

As a SkyActiv component, any Mazda 6 engine review will be sure to mention how this engine reduces friction within the engine as well as in the crankshaft, rods, and pistons. The SkyActiv technology also improves the efficiency of both the water pump and the oil pump. These factors, combined with the high compression ratio, allows for extremely good efficiency when compared to similar engines offered on the competition. The engine in the Mazda 6 also gives drivers better-than-average low to mid-range torque, partially because of the high compression ratio. The secret to the SkyActiv engine’s 13.0:1 compression ratio is the dome-shaped pistons which are able to harness more energy from the fuel.

Like all other SkyActiv engines, the one mentioned in any Mazda 6 engine review aims to create ideal combustion throughout its leading compression ratio. The average conventional engine running on internal combustion can only take advantage of about 30 percent of the potential energy of the fuel. The SkyActiv engines, however, compress the fuel-air mixture to an impressive degree within the cylinders, giving you more energy to work with from every single drop of fuel. This leads to more power while improving fuel economy, giving drivers the best of all engine features. In fact, both torque and fuel efficiency are about 15 percent better in the SkyActiv-G 2.5-liter engine in the Mazda 6 than similar existing engines.

Other Mechanical Components in the Engine

The SkyActiv-G engine in the Mazda 6 works together with one of several SkyActiv transmissions. The standard option is a SkyActiv-MT 6-speed manual. The GX lets you upgrade to a SkyActiv-Drive 6-speed automatic with a Drive Selection switch and SPORT mode while the automatic on the GS or GT adds paddle shifters. You can also take advantage of Mazda’s i-ELOOP regenerative braking to further boost fuel economy. When paired with the SkyActiv-MT manual, any Mazda 6 engine review will tell you to expect 9.4 L/100 km in the city and 6.4 liters on the highway. Choosing the SkyActiv-Drive automatic gives you 8.8 city/6.1 highway L/100 km and the automatic with i-ELOOP gets 8.5 city/5.9 city.




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