If you’re the proud owner of a shiny new Genesis but you’re unsure what gas to put in the tank, our team at Genesis of Dublin is here to help. Whatever you pump into your Genesis vehicle affects power, smoothness, and how long the engine keeps running, so gas choices do matter. Let’s take a look at what your Genesis needs when you pull up to the gas station.
Understanding Fuel Requirements for Genesis Vehicles
The Genesis in your driveway is built to give you a buttery-smooth ride that turns heads, but it needs the right fuel to keep up that silky performance. Each Genesis model has different needs; some are happy with regular fuel, while others crave the premium stuff. It’s important that you know what your model requires at the pump.
Generally, Genesis vehicles need fuel with an octane level of at least 87. But watch out — some models are more selective. Most 2021 models are happy enough with regular fuel but can also take midgrade and premium. This includes the 2021 Genesis G80, GV80, and G90. The 2021 G70 needs premium only, meaning no less than a 91-octane rating. All Genesis models manufactured after 2021 should use premium gas. Always check your owner’s manual for the straight facts about your specific model.
What Is Premium Gas?
The main difference between regular and premium gas comes down to octane levels. Premium gas carries an octane rating of 91 or higher versus the 87 rating of regular gas. What does this mean for your car? Premium gas improves performance and response and can help maximize mileage and extend your engine’s life. This matters if your vehicle has a high-performance engine, as many Genesis cars do.
Premium gas handles heat and pressure without blowing its cool. Luxury cars often have sophisticated engines with high compression ratios to boost power and efficiency. Regular gas might panic under the pressure and ignite too early, causing that annoying knocking you might have heard inside your engine. Yes, premium costs more, but long-term benefits, including better engine health and longevity, mean it pays off over time. In the meantime, you enjoy a car that runs smoothly and powerfully, just the way it should.
Is Using Premium Gas Worth the Extra Cost?
Premium gas costs more — sometimes a lot more. Is your Genesis worth those extra dollars? For models that need premium, you’re buying performance plus insurance against future repairs, and you’re protecting your car’s value. Premium fuel may even improve mileage in cars built for it.
The bottom line is that your engine runs cleaner, works better, and lasts longer with the right gas.
Common Myths
Time to crush some myths about Genesis cars and fancy fuel.
Myth Number One: All Genesis Vehicles Must Use Premium Gas
While the G70 does need the good stuff, others, such as the 2021 G80, GV80, and G90, can run fine on regular fuel. Check your manual before wasting money at every fill-up.
Myth Number Two: Premium Gas Turns Any Genesis into a Race Car
Some people think that using premium gas in a car designed for regular fuel enhances performance and fuel mileage. But using premium in a car made for regular gas won’t add horsepower or make it faster, so don’t waste your money. It’s always best to stick to the manufacturer’s recommendations.
Myth Number Three: A One-Off Use of Regular Gas Might Kill Your Premium-Loving Engine
It’s not ideal, but your car won’t die from one tank of lower-octane fuel. If your only choice is regular gas for a fill-up, your car will survive.
Consequences of Using Regular Gas in a Premium-Recommended Genesis
As mentioned above, an emergency fill-up here and there when there’s no premium available shouldn’t be a problem. But make it a habit, and you may be asking for trouble. If you repeatedly fill a premium-hungry Genesis with regular gas, you’ll probably quickly notice the changes. Your car may feel sluggish, acceleration might be weaker, and you might hear knocking or pinging sounds when pushing the engine.
The long-term consequences are that parts are likely to wear faster, the engine will strain, especially in high heat or on hills, and you might get worse mileage, erasing any savings. Also, check your warranty papers — using the wrong fuel could cause warranty issues if problems develop.
Fueling Tips for Your Genesis Vehicle
Here are a few tips for when you’re filling up your Genesis:
- Check it’s premium: At gas stations, look out for the octane ratings on the buttons. If the rating is 91 or higher, you can assume it’s premium gas.
- Check for quality fuel: Not all gas stations have the same quality fuel. Busy stations are more likely to have fresher fuel since their tanks get refilled often.
- Check out top-tier stations: Many Genesis owners prefer top-tier stations that treat their gas with extra detergent additives. It might cost more pennies, but it helps keep fuel parts cleaner, protecting them from carbon buildup and deposits.
- Check it and stick with it: It’s advisable to check which fuel type the manufacturer recommends and then stick with it. Your car adapts to what you use, so constantly switching between regular and premium can confuse the system and affect performance, potentially causing damage.
- Check in for maintenance: No matter what you put in the tank, it’s still crucial to keep up with oil changes and regular checks — even perfect fuel can’t make up for skipped maintenance.
- Check your warranty period: If you’re still within your warranty period, it’s a smart idea to save your gas receipts. If questions come up about whether you used the right fuel, you’ll have proof.
Treating Your Genesis to the Right Fuel
Using the right fuel for your Genesis doesn’t mean you’re picky — it means you’re a smart owner. Just remember to check the manual in your glove box so you know exactly what your Genesis needs.
If you want more tips about keeping your Genesis running perfectly or want to learn what makes these luxury cars special, our friendly team at Genesis of Dublin is always here to help. Make an appointment or stop by today.


