5 Reliable SUVs Built to Go 400,000 Miles and Beyond
Many drivers in the United States want an SUV that can stay on the road for decades, not just a few years. Some models earn a reputation for crossing the 400,000‑mile mark when properly cared for. This article looks at what helps an SUV last that long, which models are commonly recognized for longevity, and how you can maintain one to maximize its life.
Keeping an SUV running smoothly past 400,000 miles is possible, but it depends on choosing the right vehicle and caring for it over many years. Certain models have earned a reputation for durability, especially when drivers stay on top of maintenance and repairs. Understanding what sets these SUVs apart helps you make an informed choice and manage long-term ownership.
What makes an SUV reach 400,000 miles?
Reaching 400,000 miles starts with solid engineering. Body-on-frame construction, robust automatic transmissions, and proven, naturally aspirated engines often handle wear and tear better than lighter-duty drivetrains. These designs are common in traditional, truck-based SUVs and help them tolerate towing, rough roads, and heavy cargo.
Equally important is how the SUV is used. Gentle acceleration, avoiding heavy towing beyond rated limits, and staying away from harsh off-road abuse all reduce stress on major components. Clean engine oil, quality fuel, and fresh transmission and differential fluids help internal parts resist friction and heat. Finally, access to parts and experienced technicians makes it easier to keep high-mileage SUVs running instead of parking them when big repairs are needed.
Criteria used to select these SUVs
The SUVs discussed here are chosen based on several practical criteria. First, they have a long-standing history of being used as family haulers, work vehicles, or off-road rigs, often accumulating very high mileage in real-world conditions. Second, they appear frequently in longevity discussions among mechanics and owners, with many examples reported well past 200,000 miles and some approaching or exceeding 400,000 miles when maintained.
Third, they offer relatively straightforward mechanical designs without excessive complexity for critical systems such as engines and transmissions. This supports easier diagnosis and repair as the vehicle ages. Lastly, strong parts support and active owner communities in the United States make it more realistic to keep these SUVs on the road for the long term.
List of the 5 reliable SUVs
While no vehicle can guarantee a 400,000-mile lifespan, the following five SUVs are often associated with long service lives when maintained carefully:
- Toyota Land Cruiser – Known for its heavy-duty frame, durable V8 engines (in older U.S. models), and global reputation as a workhorse in harsh climates.
- Toyota Sequoia – A full-size SUV sharing many components with Toyota trucks, frequently used for family duty and towing while still racking up high mileage.
- Toyota 4Runner – A mid-size SUV with body-on-frame construction and a strong track record among off-road enthusiasts and daily drivers alike.
- Lexus GX – Closely related to the Toyota Land Cruiser Prado sold in other markets, blending luxury with a rugged ladder frame and V8 powertrain in many model years.
- Chevrolet Suburban – One of the longest-running SUV nameplates, widely used by families, government fleets, and commercial operators, with broad parts availability and repair knowledge.
From a cost perspective, these SUVs tend to be more expensive than smaller crossovers, especially well-kept used examples with service records. Buyers often pay a premium for durability and brand reputation. Older, higher-mileage units may have lower purchase prices but can require substantial investment in suspension, cooling, and drivetrain components to remain reliable.
| Product/Service | Provider | Cost Estimation (U.S. used market) |
|---|---|---|
| Land Cruiser (used) | Toyota | Roughly $25,000–$60,000 USD, depending on age, mileage, and condition |
| Sequoia (used) | Toyota | Roughly $15,000–$45,000 USD, depending on age, mileage, and condition |
| 4Runner (used) | Toyota | Roughly $18,000–$45,000 USD, depending on age, mileage, and condition |
| GX (used) | Lexus | Roughly $20,000–$50,000 USD, depending on age, mileage, and condition |
| Suburban (used) | Chevrolet | Roughly $12,000–$40,000 USD, depending on age, mileage, and condition |
Prices, rates, or cost estimates mentioned in this article are based on the latest available information but may change over time. Independent research is advised before making financial decisions.
These estimates reflect broad ranges in the U.S. used market for vehicles that are often several years old; actual prices vary by region, trim level, accident history, and overall care.
Maintenance tips to reach 400,000 miles
Long life starts with following the manufacturer’s maintenance schedule, and then going slightly beyond it in areas known to affect longevity. Regular oil and filter changes using quality fluids help prevent internal engine wear. Transmission services, differential fluid changes, and transfer case fluid checks are critical on four-wheel-drive SUVs that may see heavy use.
Suspension and steering parts should be inspected routinely, especially on heavier, body-on-frame models that carry passengers and cargo. Replacing worn shocks, bushings, and ball joints not only improves ride quality but also reduces stress on other components. Addressing cooling system issues early—such as aging radiators, water pumps, or hoses—helps prevent overheating episodes that can shorten engine life dramatically.
Corrosion control matters in regions that use road salt. Rust on frames, brake lines, and fuel lines can end the life of an SUV even when the engine and transmission still run well. Regular underbody washes, periodic inspections, and timely rust repair can significantly extend the safe operating life of the vehicle.
Pros and cons of owning a high-mileage SUV
Owning an SUV with several hundred thousand miles offers practical advantages but also clear trade-offs. On the positive side, much of the initial depreciation has already occurred, so insurance and registration costs may be lower relative to a new vehicle. A high-mileage SUV that has been well maintained can provide many more years of service, making it a potentially cost-effective way to access a capable, comfortable vehicle.
However, older SUVs often require more frequent repairs and preventive work. Even durable drivetrains will eventually need major components like timing chains, suspension parts, or steering racks replaced. Fuel economy is usually worse than that of modern compact crossovers or hybrids, especially for body-on-frame, V8-powered models. In some urban areas, parking, emissions testing, and comfort expectations may also limit how practical a very high-mileage SUV feels.
Choosing a high-mileage SUV with a strong reliability reputation, documented maintenance history, and a thorough pre-purchase inspection can give you a better chance of reaching or even surpassing 400,000 miles. With realistic expectations, disciplined maintenance, and a reasonable budget for ongoing repairs, such vehicles can remain dependable companions on American roads for many years.
