Crossovers may be more efficient, easier to park, and packed with family-friendly features, but there's one thing old-school full-size SUVs still do better than almost anything else: rack up serious mileage.Built on truck-based platforms and designed for hard work, these machines were made to tow, haul, and keep going long after most vehicles start showing their age.That kind of durability matters more than ever as vehicle prices keep climbing and owners hang onto their cars for longer.
Big American SUVs have earned their reputation the hard way, relying on proven powertrains, heavy-duty components, and engineering designed to take a beating.\ Among them, one model stands above the rest.From airport shuttle fleets to family road trips and law-enforcement duty, it has quietly become one of America's most trusted long-haul SUVs.To give you the most up-to-date and accurate information possible, the data used to compile this article was sourced from Chevrolet and other authoritative sources, including MotorTrend and TopSpeed.
Related Forget a hybrid SUV—this one gets 32 MPG without a battery A hybrid isn't the only way to save at the pump—this SUV delivers an impressive 32 MPG without a battery or charging cable.Posts 4 By Adam Gray Why the Chevrolet Suburban became America's high-mileage SUV icon Few family haulers have earned a reputation for longevity quite like it The Suburban didn't earn its reputation for longevity by accident.Chevrolet has been refining the formula for decades, sticking to the same core recipe of truck-based toughness, proven powertrains, and practical engineering rather than constantly reinventing the wheel.
That approach is still alive and well today.The latest Suburban rides on GM's T1XX body-on-frame platform, the same architecture underpinning the brand's full-size pickup trucks.Its huge footprint does more than create a cavernous interior.
With a wheelbase of nearly 134 inches and an overall length of more than 225 inches, the Suburban benefits from excellent highway stability, strong towing manners, and reduced strain on its mechanical components over long distances.The engine lineup also plays a big role in its durability story.The standard 5.3-liter V-8 delivers 355 horsepower and 383 pound-feet of torque, while the optional 6.2-liter V-8 bumps output to 420 horsepower and 460 pound-feet, with both engines relying on old-school displacement rather than aggressive turbocharging to get the job done.
The 5.3-liter V-8 has become the go-to choice for buyers chasing longevity.It rarely has to work hard in everyday driving, and when paired with GM's 10-speed automatic transmission, it settles into low-rev cruising that helps reduce wear over time.For those who spend serious time on the highway, the available 3.0-liter Duramax diesel is arguably even more impressive.
With roughly 495 pound-feet of torque on tap, it combines strong towing performance with excellent fuel economy, while its low-rev nature and heavy-duty construction make it a natural fit for high-mileage use.Practicality is another big reason the Suburban has remained a family favorite for so long.It can comfortably carry seven or eight passengers without sacrificing cargo space, something many three-row SUVs still struggle to balance.
Fold the rear seats flat, and you'll unlock more than 140 cubic feet of cargo capacity.That's the kind of flexibility that turns a family SUV into a road-trip machine.Related 10 budget-friendly SUVs that rarely need repairs Budget-friendly and dependable: these SUVs won't break the bank.
Posts By Tyler Dupont The hardware behind the Suburban's legendary durability Truck-based engineering and proven engines help it go the distance Part of the Suburban's durability comes down to simple engine philosophy.Its naturally aspirated V-8s generate plenty of torque without relying on high boost pressures or squeezing maximum performance from a smaller engine, which means they're rarely working hard in everyday driving.GM's small-block V-8 family has also been around long enough to iron out most of the major issues.
After decades of production across millions of trucks and SUVs, it's one of the most proven engine architectures on the road.Chevrolet Suburban Like SUV 2026 Base: $63,400 Base Trim Engine 5.3L EcoTec3 V8 ICE Base Trim Transmission 10-speed automatic Base Trim Drivetrain Rear-Wheel Drive Base Trim Horsepower 355 HP @5600 RPM Base Trim Torque 383 lb.-ft.@ 4100 RPM Base Trim Fuel Economy (city/highway/combined) 15/20/17 MPG Make Chevrolet Model Suburban Segment Full-Size SUV Powered by Expand Collapse The 5.3-liter V-8 sticks with a compact pushrod design that uses fewer moving parts than many overhead-cam alternatives.
That simplicity can pay dividends over the long haul, even though the engine still benefits from modern features like direct injection, variable valve timing, and cylinder deactivation.Step up to the 6.2-liter V-8 and performance becomes surprisingly impressive for something this large.It can push the Suburban to 60 mph in less than six seconds, but the bigger advantage is how effortlessly it handles towing, highway passing, and heavy loads without putting extra strain on the drivetrain.
The rest of the drivetrain has evolved just as much as the engines.GM's 10-speed automatic transmission keeps the engine in its sweet spot more often, helping with fuel economy, towing performance, and lower cruising RPMs on long highway journeys.Underneath, the Suburban continues to use heavy-duty hardware built for hard work.
The switch to an independent rear suspension improved ride quality significantly, while available adaptive dampers and air suspension help make long-distance travel far more comfortable.Its towing credentials tell a similar story.Properly equipped models can pull up to 8,100 pounds, and a vehicle engineered for that kind of workload is barely breaking a sweat during the average school run or daily commute.
Keep up with routine maintenance, including oil changes, transmission servicing, coolant flushes, and suspension upkeep, and these SUVs have repeatedly shown they can cruise past 200,000 miles while remaining mechanically strong.Related 10 Three-Row Hybrids That Make Perfect Family Vehicles These three-row hybrids offer the perfect mix of efficiency, space, and comfort, making them ideal for families on the go.Posts 1 By Tyler Dupont Built to haul people, gear, and just about anything else Few SUVs combine family-friendly space with serious towing ability this well Longevity is only part of the reason SUVs like the Suburban have remained popular for so long.
They also happen to be exceptionally good at the things large families, road-trippers, and towing enthusiasts need them to do.Space is the biggest selling point.While modern three-row crossovers have improved dramatically, very few can match the combination of adult-friendly third-row seating and usable cargo space that a full-size SUV delivers.
The Suburban's long wheelbase pays dividends here.It creates a roomy cabin with generous legroom across all three rows, making long-distance travel noticeably more comfortable for everyone on board.Cargo capacity is equally impressive.
Even with every seat occupied, there's still plenty of room for luggage, sports gear, or camping equipment, and folding the rear seats flat opens up a cavernous load area that rivals some cargo vans.Towing ability remains another major advantage.Whether it's a boat, camper, horse trailer, or utility trailer, these SUVs are built to handle serious loads, while their size and weight help keep everything stable at highway speeds.
They've also become far more refined than many people remember.Modern suspension tuning, available magnetic ride control, adaptive dampers, and air suspension systems help deliver a smooth, composed ride that feels surprisingly polished for such a large vehicle.Another area where modern full-size SUVs have improved dramatically is cabin refinement.
Extensive sound insulation, acoustic glass, and more sophisticated suspension setups help keep road and wind noise to a minimum, making long highway journeys far less tiring.The biggest trade-off is still fuel economy.Gas-powered V-8 models generally return combined figures in the mid-to-high teens, which is the price you pay for this level of size and capability.
Deals Save on SUV gear and road-trip essentials - Deals Explore discounts on SUV and road-trip essentials - top savings on towing accessories, cargo organizers, roof racks, heavy-duty floor liners, portable battery chargers, and maintenance tools.Browse deals to outfit big SUVs and boost long-haul reliability without overspending.Deals Explore Deals The available diesel engine helps soften that blow.
On the highway, it can return fuel economy close to 27 MPG, making cross-country road trips and long-distance towing noticeably easier on the wallet.Related 10 Budget-Friendly Midsize SUVs That Are Great for First-Time Buyers These budget-friendly midsize SUVs offer reliability, comfort, and value, making them perfect choices for first-time buyers.Posts By Tyler Dupont Real-world abuse is what built the Suburban's reputation Few SUVs have survived tougher jobs or accumulated more miles If you really want to know how durable a vehicle is, look at what fleet operators choose.
Few SUVs have spent more time enduring brutal real-world use than the Chevrolet Suburban.Airport shuttle fleets regularly pile hundreds of thousands of miles onto these vehicles while running almost around the clock.Constant idling, packed passenger loads, stop-start traffic, and endless highway driving would quickly expose weaknesses, yet the Suburban continues to be a fleet favorite.
Police departments have also put it through some of the toughest conditions imaginable.High-speed pursuits, aggressive acceleration, curb strikes, and hours of idling place enormous stress on any vehicle, but the Suburban has built a reputation for handling that punishment year after year.It's not just law enforcement, either.
Government agencies, utility companies, and commercial operators continue to rely on body-on-frame SUVs because they're built to carry heavy loads, tackle rough roads, and withstand demanding work schedules.One of the clearest signs of the Suburban's durability is how many older examples are still on the road.Seeing a 15- or even 20-year-old Suburban serving daily-driver duty isn't unusual, even as many newer vehicles have long since disappeared.
A big part of that comes down to repairability.Because the Suburban shares so much of its hardware with GM's full-size truck lineup, replacement parts are easy to find, repair knowledge is widespread, and most independent mechanics already know the platform inside and out.There's also something to be said for owner confidence.
People are far more likely to invest in maintenance when they trust a vehicle, and that trust often helps keep Suburbans on the road for decades.At a time when the industry is moving toward smaller turbocharged engines, increasingly complex hybrid systems, and crossover-focused designs, the Suburban remains refreshingly straightforward.It's big, heavy, thirsty, and built to work, and for buyers who care more about reaching 200,000 miles than chasing the latest trend, that formula still makes a lot of sense.
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