Which cars can truly be considered the most reliable?
Some vehicles were designed with an enormous margin for durability and reliability in mind, rather than with a service life that effectively ends when the warranty does. Owners of these cars often keep them for decades because they simply don't want to give up a vehicle that has proven itself over time.
The Toyota Land Cruiser relies on simple but thoughtfully engineered solutions. It has relatively few complicated electronic features, so major failures are uncommon.
The naturally aspirated gasoline V8 used in the Land Cruiser can run reliably for more than 310,000 miles with proper maintenance. Transmissions are also generally trouble-free when the fluid is changed at the recommended intervals.
The predictable behavior of this body-on-frame SUV allows owners to plan routine maintenance rather than constantly worry about unexpected repair bills. Parts availability is generally good, and replacing worn components or handling minor repairs is usually straightforward.
The Toyota Land Cruiser is well suited to off-road driving, towing heavy trailers and long-distance road trips. Using the SUV in demanding conditions only highlights its durability and practicality. Owners who have bought a Land Cruiser often see little reason to replace it.
The Mercedes-Benz W124 has earned its reputation as an "everlasting Mercedes" for good reason. During the sedan's production run from 1984 to 1995, Mercedes-Benz placed a strong emphasis on build quality and long-term durability.
One example was the use of chrome-molybdenum alloy steel, which helped create a highly durable body structure with strong resistance to corrosion. Extensive hot-dip galvanizing provided additional protection and helped extend the car's service life.
U.S.-market versions such as the 260E and 300E were equipped with engines from the M102 and M103 families. These powertrains featured robust components, chain-driven camshafts and relatively little complicated electronics. With proper maintenance, they could reach well over 300,000 miles.
Many W124 models were equipped with the four-speed 722.3 automatic transmission. These electronically simple transmissions, with a robust lubrication system, developed a reputation for exceptional durability.
Owners who keep up with regular maintenance often say the car remains remarkably predictable. Catastrophic failures are uncommon, and serious hidden problems such as extensive corrosion are less likely to suddenly emerge in a well-maintained example.
Owners also hold on to their W124s for reasons beyond reliability and durability. For many, the sedan represents timeless automotive design and a reminder of an era when Mercedes-Benz was a powerful symbol of success.
The Volvo 240 is a prime example of a successful combination of simple engineering, a durable body and a reliable powertrain.
On many versions, the ignition and engine-management systems relied on straightforward mechanical and electromechanical solutions. That made problems relatively easy to diagnose and fix, sometimes with little more than basic tools and mechanical know-how. Checking distributor contacts, cleaning the distributor cap or adjusting the carburetor could often resolve issues without complicated diagnostics.
That simplicity helped the Swedish car earn its reputation as virtually indestructible.
The Redblock engines used in the Volvo 240, including the B21 and B23, were thoughtfully engineered and featured cast-iron blocks. With timely oil and timing-belt changes and proper attention to the cooling system, these engines could cover roughly 310,000 to 500,000 miles without a major overhaul. Some examples have exceeded 620,000 miles.
Body durability was helped by galvanized doors, the hood, fenders and trunk lid. Hidden cavities, joints and seams received additional corrosion protection and sealants, while a thick paint finish provided another layer of protection.
Although the Volvo 240 is an old car—it was produced from 1974 through 1993—finding a modern replacement with the same combination of simplicity, durability and longevity is surprisingly difficult.
One of the Lexus LS 400's biggest strengths is its carefully engineered mechanical foundation. Its 1UZ-FE V8 is naturally aspirated and avoids turbocharging and many of the complicated auxiliary systems found in newer vehicles. That relatively straightforward design helped give the engine an impressive service life.
Under proper maintenance, these engines can reach roughly 310,000 to 435,000 miles, while some examples have gone beyond 620,000 miles.
The manufacturing and assembly process was also closely controlled. Components were carefully inspected by experienced technicians to minimize defects.
Inside, the full-size luxury sedan featured genuine leather and real wood veneer, including finishes such as zebrawood. Wood grain was selected individually for each vehicle, giving the cabin a distinctive appearance.
Its upscale styling, exceptional reliability and relatively modest maintenance requirements are among the main reasons LS 400 owners are often reluctant to part with their cars.