Bob Penkhus Mazda South - Which Fuel Should the 2026 Mazda CX-90 Use near Pueblo, CO?
Choosing the right fuel for your 2026 Mazda CX-90 is a simple decision that pays you back every day with smoother performance and peace of mind. For drivers commuting between Pueblo and Colorado Springs, climbing toward Wetmore or Westcliffe on the weekends, or towing a small camper to Lake Pueblo State Park, the octane you select matters. At Bob Penkhus Mazda South, we want you to feel confident at the pump, so here is clear guidance based on Mazda’s recommendations and our local driving experience.
The definitive fuel guidance for Pueblo-area CX-90 owners
Two Inline 6 configurations define the 2026 Mazda CX-90 lineup: 3.3 Turbo and 3.3 Turbo S. Both use the e-SKYACTIV®-G 3.3L Inline 6 Turbocharged engine, paired with a smooth SKYACTIV®-Drive 8-Speed Automatic Transmission and standard i-Activ AWD®. Where they differ is tuning and the fuel that best supports each powertrain’s intent.
- 3.3 Turbo fuel: Regular unleaded 87 AKI or higher is recommended.
- 3.3 Turbo S fuel: Premium unleaded 91 AKI or higher is recommended to optimize performance.
- Altitude note for Colorado: We recommend avoiding 85 AKI fuel in modern turbocharged engines, even at elevation.
- Towing and heavy loads: If you plan to tow or carry full passengers and cargo frequently, follow the recommendation above for your engine to maintain confident response.
That quick checklist is the starting point. Now let’s connect the dots to real-world driving around Pueblo, CO so you know exactly why this guidance matters and how to put it to work on your routes.
Why octane matters for your CX-90 around Pueblo
Octane controls how resistant fuel is to pre-ignition (also called knock). Turbocharged engines—like the e-SKYACTIV®-G Inline 6 in your CX-90—run higher pressures to make strong, efficient power. The 3.3 Turbo is engineered to deliver confident performance on regular 87 AKI, while the 3.3 Turbo S is tuned for maximum output when you feed it premium 91 AKI or higher.
In day-to-day Pueblo driving, you will feel the benefit of the correct octane in cleaner acceleration as you merge onto I-25, climb toward Beulah Valley, or pass slower traffic on US-50. The correct fuel helps the engine’s timing and boost stay where Mazda intended, so your CX-90 feels responsive and composed without unnecessary strain.
Colorado’s elevation can introduce confusion because some stations sell 85 AKI. While altitude lowers atmospheric pressure, which historically allowed some vehicles to use lower octane, modern turbocharged engines are a different story. For your 2026 Mazda CX-90, our recommendation is straightforward: use at least 87 AKI in 3.3 Turbo models, and premium 91 AKI or higher in 3.3 Turbo S models.
Following Mazda’s guidance also supports long-term ownership. It helps the engine management system avoid pulling timing to suppress knock, which can subtly reduce performance under load. Choose the right octane, and your CX-90 simply goes about its job—quietly, smoothly, and confidently.
Fueling for towing, mountain grades, and full-family trips
Many Pueblo-area families lean on the CX-90’s flexible capability. If you plan to tow a small boat to Lake Pueblo or head west with a gear trailer, fueling correctly protects performance and your experience. Towing capacity varies by model, ranging from 3,500 to 5,000 pounds when properly equipped with a tow hitch, and select trims—like 3.3 Turbo Premium Sport—feature a 5,000-pound towing capacity along with Mi-Drive modes for Towing, Off-Road, and Sport.
With a trailer in tow and a full cabin, you are asking more of the engine—especially on summer days or long grades into the Wet Mountains. That is when the 3.3 Turbo S’s premium 91 AKI recommendation becomes particularly important. It helps preserve the engine’s intended timing and boost so you maintain a confident pace, take advantage of Mi-Drive’s Towing mode, and enjoy the extra assurance that comes with i-Activ AWD® when surfaces change.
Even if you do not tow, families who frequently travel fully loaded will notice smoother drivability when the correct octane is used. It is a small decision at the pump that makes long days on I-25 or CO-96 more relaxed for everyone.
Local fueling tips from our Pueblo-area perspective
You do not need to overthink fueling—stick with the recommended octane, and you are set. Still, here are a few practical tips we share with our guests who commute from Pueblo or split time between Pueblo West and Colorado Springs.
- Plan your stops: If you drive US-50 west or head into the foothills, top off in town so you have your preferred 91 AKI (for 3.3 Turbo S) before you climb.
- Match your day: Towing to the reservoir or carrying a full cabin? That is the time to be extra diligent about using the recommended octane for your engine.
- Avoid 85 AKI: Even at elevation, we advise against 85 AKI in turbocharged engines for consistent response and drivability.
- Use connected tools: With Mazda Connected Services and the MyMazda App, you can check vehicle status remotely and keep your fuel planning simple before you head out.
If you ever have questions about local stations that reliably stock premium 91 AKI or want help planning a towing setup, our team is happy to share recommendations from around Pueblo and along I-25.
Fuel is one piece of the confidence equation. The 2026 Mazda CX-90 also surrounds you with advanced driver confidence features. Available 360° View Monitor with See-through View and Trailer Hitch View makes it easier to align a trailer in tight spaces, and i-Activsense® safety features—like Blind Spot Monitoring, Smart Brake Support, and Lane-keep Assist—support your awareness in traffic or on busy frontage roads.
Inside, the cabin is designed for calm—even on long state park days. Available Nappa leather-trimmed seats feel welcoming, and the available Bose® system helps set the right tone for family trips. USB-C charging access in the 2nd and 3rd rows (on select models) keeps everyone powered, while Mazda Connect™ with Apple CarPlay® and Android Auto™ keeps navigation and audio simple when you are moving between Pueblo Boulevard, US-50, and I-25.
These details matter because the right fuel choice is ultimately about protecting a great driving experience—not just on paper, but on the exact roads you travel every week.
What about the CX-90 Plug-in Hybrid?
Shoppers comparing the Inline 6 to the CX-90 Plug-in Hybrid (PHEV) will appreciate that the PHEV provides a flexible 27-mile electric range for short trips, then combines combustion and electric power for longer journeys. If you are leaning PHEV and have questions about fueling, charging, or whether your daily Pueblo-to-Fountain roundtrip fits in the electric range sweet spot, our product specialists can walk you through a side-by-side comparison tailored to your routine.
Whether you choose the 3.3 Turbo, the 3.3 Turbo S, or the CX-90 PHEV, the goal is the same: a confident, quiet drive that makes every mile feel effortless. Getting the fuel question right is a fast win on day one.
Why buy and service your CX-90 with us
At Bob Penkhus Mazda South, we match expert product guidance with Mazda-trained service support. From installing a factory tow hitch and setting up your Trailer Hitch View to routine maintenance with Genuine Mazda Parts, we keep your CX-90 performing at its best. And because we serve many guests from Pueblo and Pueblo West, our advisors can help you plan smart fueling, towing, and service intervals around your real schedule.
Ready to experience the 2026 Mazda CX-90? Visit us in Colorado Springs for a test drive, compare 3-row seating configurations, and feel how the e-SKYACTIV®-G Inline 6 delivers on responsiveness when you ask for it. Bring your questions about fuel, towing, Connected Services, or i-Activ AWD®—we will make sure you head home to Pueblo with answers.
Frequently Asked Questions:
Can I use 85 octane in my 2026 Mazda CX-90 around Pueblo?
We recommend avoiding 85 AKI in modern turbocharged engines. For 3.3 Turbo models, use regular unleaded 87 AKI or higher. For 3.3 Turbo S models, use premium 91 AKI or higher to optimize performance.
Will premium fuel improve performance in the 3.3 Turbo (non-S) model?
The 3.3 Turbo is designed to run confidently on regular unleaded 87 AKI or higher. Using higher octane is acceptable, but the engine’s recommended requirement is 87 AKI or above. Follow your owner’s manual and our team can help you tailor fueling to your routes.
Does i-Activ AWD® change which fuel I should buy?
No. i-Activ AWD® is standard on the 2026 Mazda CX-90 and does not change the fuel recommendation. Choose fuel based on your engine: 87 AKI or higher for 3.3 Turbo, 91 AKI or higher for 3.3 Turbo S.
What if I am towing to Lake Pueblo—should I change fuel?
Use the recommended octane for your engine. If you drive a 3.3 Turbo S, premium 91 AKI or higher is especially important when towing or climbing grades. Activate Mi-Drive’s Towing mode on equipped models and enjoy the confident help of i-Activ AWD®.
Can Bob Penkhus Mazda South help me find stations with 91 AKI?
Yes. Our team serves many guests from Pueblo and can point you to reliable premium options along I-25, US-50, and near Lake Pueblo State Park. We are always happy to help you plan your fueling and towing routine.
Your CX-90 is built to deliver effortless power and calm confidence—fueling it right is the fastest way to experience that promise every day. If you would like personalized guidance for your routes between Pueblo and Colorado Springs, reach out to our product specialists or stop by Bob Penkhus Mazda South. We are here to help you enjoy every mile.