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The Watchdog Report: The Most Reliable 5-Year-Old Midsized SUVs

August 4, 2026 By CRWatchdog Team

2021 Lexus RX 350 Luxury Midsized SUV

Buying a brand-new midsized SUV can feel like a financial punch in the gut, with prices easily soaring past $45,000 to $50,000. But if you want a high seating position, all-wheel drive for winter weather, and plenty of cargo space without destroying your budget, there is a clear sweet spot: 5-year-old used models from the 2021 model year. (If you're looking for new models instead, check out our breakdown of the Best New SUVs Under $30k.)

Why 2021? Five years is the magical threshold where a vehicle has already taken its biggest depreciation hit, yet still retains modern powertrains, decent infotainment tech, and plenty of remaining life.

However, buying used always carries risk. To separate the long-lasting workhorses from the money pits, Consumer Reports analyzed real-world data from tens of thousands of member survey responses. Every SUV on this list achieved above-average reliability scores and strong road-test performance when new.

The Watchdog ADAS Warning: In 2021, crucial Advanced Driver Assistance Systems (ADAS)—such as Forward Collision Warning (FCW), Automatic Emergency Braking (AEB), Blind Spot Warning (BSW), and Rear Cross Traffic Warning (RCTW)—were not always standard equipment. Pay close attention to trim levels when shopping!


At a Glance: 2021 Used SUV Comparison Table

Model Est. Price Range Real-World MPG Seats The Watchdog Take
Buick Enclave $17,500 - $24,775 22 mpg 3-Row Flagship luxury ride with a surprisingly roomy third row.
Honda Passport $19,175 - $25,400 22 mpg 2-Row Roomy 5-seater with great storage, but a stiff ride.
Honda Pilot $17,900 - $26,975 22 mpg 3-Row Highly functional family hauler with smooth V6 power.
Lexus RX 350 $31,875 - $37,625 22 mpg 2-Row Bank-vault quiet, cushy ride, and legendary reliability.
Lexus RX Hybrid $33,900 - $37,625 28 mpg 2-Row 308-hp hybrid luxury with incredible 28-29 mpg fuel economy.
Lincoln Nautilus $18,000 - $25,425 23 mpg 2-Row Swanky interior, plush ride, and standard full ADAS safety.
Nissan Murano $15,300 - $20,250 25 mpg 2-Row The budget bargain pick; quiet cabin and standard safety.
Toyota 4Runner $28,850 - $43,300 19 mpg 2/3-Row Old-school, bulletproof body-on-frame off-roader.
Toyota Highlander $23,275 - $34,775 23 mpg (Gas) / 34 mpg (Hybrid) 3-Row The gold standard for three-row reliability and efficiency.

Detailed Model Breakdown

1. Buick Enclave (2021)

2021 Buick Enclave Midsized SUV

  • Price Range: $17,500 – $24,775
  • Engine & Transmission: 3.6-liter V6 (310 hp) with a 9-speed automatic
  • Towing Capacity: 5,000 lbs
  • The Blueprint: If you want luxury comfort at an accessible price, the Enclave is a sleeper hit. Redesigned for improved space and quietness, its V6 offers lively acceleration, and its third-row seating is genuinely usable for adults compared to competitors.
  • The Catch: The electronic push-button gear selector can be infuriating during tight parking maneuvers, and lower trims lack key safety features.
  • Safety Tip: Target the Premier or Avenir trims to ensure you get Forward Collision Warning, Automatic Emergency Braking, Blind Spot Warning, and Rear Cross Traffic Warning.

2. Honda Passport (2021)

  • Price Range: $19,175 – $25,400
  • Engine & Transmission: 3.5-liter V6 with a 9-speed automatic
  • The Blueprint: Slotting between the compact CR-V and the larger 3-row Pilot, the Passport is a dedicated 2-row, 5-passenger SUV built for road trips. It features an incredibly roomy cabin and clever under-floor interior storage compartments.
  • The Catch: The suspension is tuned noticeably stiffer than the Pilot without actually delivering sporty handling. The infotainment screen is sluggish, and the push-button gear selector requires you to look down to operate.
  • Safety Tip: FCW and AEB are standard, but you must move up from the base trim to get Blind Spot Warning.

3. Honda Pilot (2021)

  • Price Range: $17,900 – $26,975
  • Engine & Transmission: 3.5-liter V6 (280 hp) with a 9-speed automatic
  • The Blueprint: The third-generation Pilot is one of the most functional 3-row family vehicles ever built. It offers a smooth ride, a refined V6 engine, and massive interior cargo capacity. The 9-speed automatic (standard for 2021) improved both responsiveness and fuel economy over older 6-speed versions.
  • The Catch: Handling feels heavy and ungainly in corners. The touchscreen is a far reach for taller drivers and requires multiple button taps for simple tasks.
  • Safety Tip: FCW, AEB, and Lane Keep Assist (LKA) are standard across all trims, but stick to the EX trim or higher to get BSW and RCTW.

4. Lexus RX 350 & RX Hybrid (2021)

2021 Lexus RX 350 Luxury Midsized SUV

  • Price Range: $31,875 – $37,625 (Gas) | $33,900 – $37,625 (Hybrid)
  • Engine & Transmission: 3.5-liter V6 (Gas) or 3.5-liter V6 + 3 Electric Motors (308 hp Hybrid)
  • The Blueprint: The Lexus RX holds its resale value for a reason: it is virtually bulletproof mechanically. The cabin is "bank-vault" quiet, the front seats are supremely comfortable, and the ride absorbs pavement imperfections effortlessly. The RX Hybrid is particularly impressive, delivering a real-world 28 to 29 mpg overall.
  • The Catch: Handling feels soft and uninspiring if you like spirited driving. The 3-row "RX-L" version exists, but its third row is far too small for practical use.
  • Safety Tip: All key ADAS safety features were standard equipment on every 2021 Lexus RX model.

5. Lincoln Nautilus (2021)

  • Price Range: $18,000 – $25,425
  • Engine & Transmission: 2.0-liter Turbo 4-Cylinder or 2.7-liter Twin-Turbo V6 with an 8-speed automatic
  • The Blueprint: Updated in 2021 with Lincoln’s slick Sync 4 infotainment system and a lavish interior redesign, the Nautilus delivers effortless highway power (especially with the twin-turbo V6) alongside agile handling and a whisper-quiet cabin.
  • The Catch: The piano-key push-button shifter takes some getting used to, and city fuel economy drops quickly if you have a heavy foot.
  • Safety Tip: All core safety equipment came standard across the lineup in 2021.

6. Nissan Murano (2021)

  • Price Range: $15,300 – $20,250
  • Engine & Transmission: 3.5-liter V6 with a Continuously Variable Transmission (CVT)
  • The Blueprint: The lowest entry price on this list, the Murano prioritizes plush interior seating and a quiet cabin over aggressive utility. Its V6 engine is surprisingly punchy and nets a respectable 25 owner-reported mpg.
  • The Catch: Steering feels very light and numb, offering little road feedback. Stick to lower trims with 18-inch wheels, as the Platinum trim's 20-inch wheels ruin the plush ride quality.
  • Safety Tip: Nissan's Safety Shield 360 (including FCW, AEB, BSW, and RCTW) became standard across all trims for the 2021 model year.

7. Toyota 4Runner (2021)

  • Price Range: $28,850 – $43,300
  • Engine & Transmission: 4.0-liter V6 (270 hp) with a 5-speed automatic and body-on-frame 4WD
  • The Blueprint: The 4Runner is an anomaly. Built like a traditional truck with a heavy body-on-frame setup, high ground clearance, and skid plates, it offers unmatched off-road capability and legendary durability. Physical knobs and giant buttons make the controls dead simple.
  • The Catch: It drives like a truck. The ride is bouncy, handling is clumsy, the engine gets loud under load, and fuel economy hovers around a thirsty 18 to 19 mpg.
  • Safety Tip: FCW and AEB with pedestrian detection are standard, but BSW and RCTW were not available on the 2021 4Runner.

8. Toyota Highlander & Highlander Hybrid (2021)

  • Price Range: $23,275 – $34,775
  • Engine & Transmission: 295-hp 3.5-liter V6 or 2.5-liter 4-Cylinder Hybrid
  • The Blueprint: The Highlander consistently dominates used SUV rankings due to flawless long-term reliability scores. The gas V6 is smooth and predictable, while the Highlander Hybrid delivers an astounding 34 owner-reported mpg in a 3-row vehicle.
  • The Catch: The third-row seat is cramped and best reserved for young children. Ride comfort is firm compared to older Highlander generations.
  • Safety Tip: Forward collision features are standard, but check candidate vehicles for optional Blind Spot Warning and Rear Cross Traffic Warning.

The Watchdog Verdict

  • Best Value for Budget Buyers: The 2021 Nissan Murano ($15,300+) or Buick Enclave ($17,500+) offer high-end comfort and quiet cabins for under $20k.
  • Best for Maximum Fuel Savings: The 2021 Toyota Highlander Hybrid (34 mpg) and Lexus RX Hybrid (28-29 mpg) pay for themselves at the gas pump.
  • Best for Bulletproof Peace of Mind: The 2021 Lexus RX 350 or Toyota Highlander V6 remain the safest bets for long-term mechanical reliability.

More Automotive Guides from CR Watchdog

  • Best New SUVs Under $30k
  • Which Car Brands Are Most Reliable?
  • The Watchdog Budget Guide: Which Car Fits Your Wallet?
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