How Many Miles Per Gallon Does A Suburban Get

Let’s talk about the Chevrolet Suburban. It’s a giant. A metal behemoth. And you’re probably wondering: how many miles per gallon does this beast actually get?

The short answer? It’s not great. Think of it as a house on wheels. Houses don’t get good gas mileage.

For the newest models, brace yourself. A 2024 Suburban gets around 15 mpg in the city and 20 mpg on the highway. That’s the official EPA number. Combine that, and you’re looking at about 17 mpg.

The Diesel Surprise

Here’s a weird twist: there’s a diesel version. It’s a 3.0-liter Duramax engine. That baby bumps the highway number to 26 mpg.

Yes, a three-ton metal box can hit 26 mpg. That’s almost respectable. But you’ll pay extra for that engine. And diesel fuel costs more.

So the gas version? It’s basically a conversation starter at the pump. “Wow, that thing must be thirsty,” they’ll say. You’ll nod. You’ll smile. You’ll swipe your card.

Fun Fact: The Old Ones Were Worse

Remember the 1990s Suburbans? They got 10 to 12 mpg. Driving one was like drinking gasoline through a straw.

Modern engineering is a miracle. Today’s Suburban has an eight-speed or ten-speed transmission. It has cylinder deactivation. It shuts off half its cylinders on the highway.

That’s right. Your giant SUV sometimes runs like a V4 engine. It’s a shape-shifting gas guzzler.

What About the Big V8?

Most Suburbans have a 5.3-liter or 6.2-liter V8. The 6.2-liter is a monster. It makes 420 horsepower. It also makes your gas gauge drop like a rollercoaster.

With the 6.2, you’ll get about 14 city / 19 highway. That’s if you drive like a nun. If you stomp on it? Expect single digits.

But here’s the secret: nobody buys a Suburban for fuel economy. They buy it for the space. You can fit 9 people. You can tow a boat. You can haul a refrigerator with the seats folded.

Why This Number Matters (Sort Of)

Let’s be honest. You’re not buying a Suburban to save the planet. But the mpg number is a fun party stat.

Imagine this: you’re at a tailgate. Someone says, “My Prius gets 50 mpg.” You can smile and say, “Cool. Mine gets 15.” Then you open the back and reveal a couch.

It’s a trade-off. You trade fuel for freedom. You trade dollars for space. And honestly, it’s a pretty fun trade.

The Dollar Game

Let’s do some math. A 15 mpg Suburban driving 15,000 miles a year uses 1,000 gallons of gas. At $4 per gallon, that’s $4,000 a year.

A sedan at 30 mpg would use 500 gallons. That’s $2,000. So the Suburban costs you an extra $2,000 a year in fuel. Is that a lot? It depends.

If you drive across the country with six kids, it’s worth every penny. If you’re a single person commuting alone? You might want to rethink your life choices.

Quirky Suburban MPG Facts

Here’s a weird one: the 2020 Suburban with the 5.3L V8 got worse highway mpg than a 1999 Suburban with a 5.7L V8. Blame aerodynamics. The new ones are boxier.

Another fun fact: if you drive a Suburban at exactly 55 mph with the windows up, you might hit 22 mpg on the highway. Go 70 mph? You’ll drop to 16. Speed kills your mpg.

And here’s the kicker: the Suburban’s fuel tank holds 31 gallons. That’s enormous. At 15 mpg, you can go 465 miles on a full tank. That’s a road trip from New York to Cleveland.

But filling it up? That’s a spine-chiller. At $4 per gallon, one tank costs $124. You’ll feel it in your soul.

The Electric Elephant in the Room

Chevy has an electric Suburban coming. It’s called the GMC Hummer EV (sort of). But a proper electric Suburban? It’s in the works.

When that arrives, the mpg question becomes moot. You’ll ask about “miles per kilowatt.” And that number will be insane. Probably 2.0 miles per kWh, which is like 60 mpg.

But until then? We’re stuck with gas. And that’s okay. Because a gas Suburban is a character vehicle. It has personality. It rumbles. It drinks fuel and laughs.

So, What’s the Real Answer?

Here’s the truth: a Suburban gets terrible mpg by modern standards. But it gets fantastic smiles per gallon. That’s the real metric.

If you want to be practical, buy a minivan. Minivans get 20-25 mpg. They’re cheaper. They’re more efficient. But they don’t look like a land yacht.

A Suburban is a statement. It says, “I need space. I need power. I don’t care about the pump.” And that’s a fun attitude.

One Last Weird Thing

Did you know the Suburban is the longest continuously produced vehicle nameplate? It’s been around since 1935. For 89 years, it’s been guzzling gas.

Back then, it got maybe 8 mpg. Today, it gets double that. That’s progress, people. Slow, glorious, V8-powered progress.

So next time you see a Suburban at a gas station, don’t laugh. Tip your hat. That driver is living a life of fuel-swilling adventure. And they’re having a blast doing it.

As for the mpg? It’s 15 in the city. 20 on the highway. And 100% worth it if you love the ridiculous, wonderful, massive American SUV.