Shiny 2020 Mazda3 and grey 2020 Mazda6, separated by a diagonal line and a "VS" logo.

What’s the difference between the 2020 Mazda3 and the 2020 Mazda6?

2020 Mazda3 Vs. 2020 Mazda6

The 2020 model year Mazda vehicles are pouring onto dealership lots as we speak (er, write), and we couldn’t be more excited. Six months from now the “2020” designation will be the norm, and a year from now it will seem like old news, but for the moment it’s on the very cutting-edge and we’re going to enjoy it while we can.

Two models we’re particularly happy to see are the 2020 Mazda3 and 2020 Mazda6. Both vehicles get some slight additions for the 2020 model year. The Mazda6 gets a new keyfob and trunklid badge on its top Signature trim, but mostly it’s still riding high on the three redesigns its been blessed with over the past six years. The Mazda3, for its part, gets new standard equipment (all trims now include the i-Activsense driver assist suite).

Both these machines are, as always, tempting. What is it exactly that sets them apart?

2020 Mazda3 Vs. 2020 Mazda6
Compact Car (sedan and hatchback) Body Type Mid-size Sedan
$21,500 Starting MSRP $24,920
Up to 27 city / 36 highway Fuel Economy Up to 26 city / 35 highway
186 hp Horsepower 187 to 250 hp
176 – 184” L x 71” W x 57” H Dimensions 193” L x 72” W x 57” H*
13.2 to 20.1 cubic feet, 13.2 to 47.1 with seat area Cargo Volume 14.7 cubic feet

*Based on the (presumably unchanged) dimensions of the 2019 model

View Our New Mazda3 and Mazda6 Inventory


A shiny 2020 Mazda3 is parked by a sidewalk in a wet city.Body Type and Dimensions

Size and classification are the main differences between the 2020 Mazda3 and 2020 Mazda6. The variety of other differences largely stem from this central one. The Mazda6 is a midsize sedan, meaning it’s larger, which brings an assortment of both positives and negatives: the vehicle costs more and is slightly tougher to maneuver, but has more interior and cargo space (unless you get the hatchback Mazda3, which provides excellent cargo capability).


Silver 2020 Mazda6, viewed through a car window and parked by a brick wall.Engine Options

The 2020 Mazda6 is available with two engine options; both are 2.5-liter four-cylinder powerplants, but only one is turbocharged. This latter option gets up to 250 horsepower, according to Car and Driver. Mazda does insist that all-wheel drive and 2.2-liter turbo diesel iterations of the 2020 Mazda6 are coming to the United States before the end of the year.

All incarnations of the 2020 Mazda3, on the other hand, come with the same impressive 2.5-liter naturally aspirated I4. This potent zoomer pumps out 186 horsepower and 186 pound-feet of torque alike. This is more than enough power for the vehicle’s small frame; as you likely know, the performance of the Mazda3 is ridiculously acclaimed.