# Mazda's New Inline-6 Engine: Gasoline or Diesel - Which Performs Better? Performance details and market positioning of Mazda's turbocharged 3.3L SkyActiv inline-6 engine. - **Source:** [SlashGear](https://www.slashgear.com) - **Published:** 2026-08-25 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/6055e297-841d-4112-a8e6-bd59eed8de6e ## The Legacy of Inline-6 Engines Mazda's 3.3L SkyActiv inline-6 engine carries the torch from legendary Japanese powerplants like Toyota's 2JZ and Nissan's RB26. However, its current exclusive use in SUVs has disappointed performance enthusiasts. The engine comes in both gasoline (SkyActiv-G) and diesel (e-SkyActiv-D) variants globally, though only the gasoline version is available in the U.S. market. ## Gasoline Version Specifications The turbocharged 3.3L gasoline engine in the top-tier Mazda CX-90 S trim produces 340 horsepower and 369 lb-ft of torque. Base models feature a detuned version of the same engine with 280 hp and 332 lb-ft. These powertrains give the large SUV surprisingly sporty dynamics that rival performance sedans. ## Diesel Engine Advantages The SkyActiv-D 3.3 diesel generates 254 PS (250 hp) and 550 Nm (405 lb-ft) of torque, earning praise from European CX-80 drivers for its low-end grunt. However, in full-throttle acceleration tests, the gasoline CX-90 proves significantly quicker. Mazda briefly offered a diesel CX-5 in the U.S. in 2019 but discontinued it quickly due to low demand. ## Technical Comparison Gasoline inline-6 variants offer 36% more peak horsepower than their diesel counterparts (340 hp vs 250 hp). Conversely, diesel models produce 10% more torque (405 lb-ft vs 369 lb-ft). These differences create distinct driving characteristics: gasoline excels in high-RPM performance while diesel dominates in pulling power. ## Market Strategy Mazda's decision to avoid diesel in North America reflects the region's tiny diesel passenger car market share (just 0.5% in the U.S.). In contrast, diesel variants like the CX-80 find more commercial success in Europe due to fuel efficiency and low-RPM torque advantages. This regional strategy highlights Mazda's flexible platform approach. ## Driving Experience Differences Test drives reveal the diesel CX-80 offers smoother urban driving responsiveness, while the gasoline CX-90 accelerates nearly 1.5 seconds quicker in 0-100 km/h tests. Mazda engineers optimized the SUV platform specifically for inline-6 characteristics, successfully enhancing rear-drive dynamics. ## Future Potential Industry analysts speculate Mazda might eventually deploy this engine in sports models like the MX-5. Currently limited to CX-60, CX-80 and CX-90 SUVs, the powertrain could deliver even more impressive performance in a lightweight sports sedan or coupe. This strategic move strengthens Mazda's positioning in the premium segment. ## Consumer Considerations Fluctuating fuel prices and environmental regulations significantly influence gasoline vs diesel preferences. Mazda designed its inline-6 family to be competitive in both fuel types. However, in markets like the U.S., the gasoline version's performance advantage will likely remain a decisive factor for consumers choosing their next vehicle. ## Sources covering this story - https://www.slashgear.com/2239701/mazda-inline-6-engine-gas-vs-diesel-comparison/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._