If you’re shopping for a luxury SUV and reliability is at the top of your list, Lexus is usually the first name that comes to mind. That reputation mostly comes down to Toyota’s engineering DNA, which carries straight through into the Lexus lineup.

But Lexus isn’t the only Japanese luxury brand quietly building SUVs that go the distance. There’s actually a seriously underrated alternative that most people overlook, even though it goes head-to-head with the RX in all the ways that matter.

The RX still dominates the segment in the US, but this rival brings more space, more power, and similar reliability for roughly the same money. The only real surprise is how few people seem to know it’s even an option.

The state of the U.S. luxury SUV market in 2026

Big names still lead—but the gap is smaller than it looks

Credit: Lexus

SUVs are basically running the show right now thanks to how practical they are. And if you’ve got a bit more to spend, a luxury SUV that mixes comfort, tech, and everyday usability is an easy sell.

The tricky part is reliability. Brands like BMW and Mercedes-Benz nail the luxury side, but they don’t always match the long-term dependability people expect from Lexus.

That combination—premium feel with true Lexus-level reliability—is pretty rare, which is why a few solid options end up flying under the radar. That’s exactly the case here, but first, it helps to look at where the U.S. luxury SUV market stands overall before zooming in.

BMW is still going strong right now

Credit: BMW

Coming off a strong 2025, BMW is still leading the U.S. luxury market in Q1 2026 with 84,231 units sold. That said, it’s a small drop of about 3 percent, which actually mirrors the broader slowdown across the segment.

Lexus follows fairly closely in second with 80,952 units, down 2.5 percent year over year. Mercedes-Benz takes third place at 78,500 units, also slipping around 3 percent compared to the same period last year.

Further back, Acura quietly takes fourth with 32,352 sales, but it’s one of the few brands moving in the right direction with a 5.2 percent gain. The bigger story is Audi’s sharp fall to 29,886 units, down 30 percent year over year, with only the new A5 and A6 managing to post growth.

The Lexus RX still leads the luxury SUV market

Credit: Lexus

Looking at the sales data, the RX is still comfortably America’s best-selling luxury SUV—and the best-selling luxury vehicle overall. It moved 29,336 units in Q1 2026, almost matching Audi’s entire brand total for the same period.

Mercedes-Benz doesn’t break out individual models, so second place isn’t officially confirmed. But based on available numbers, the BMW X5 likely takes that spot with 18,680 units sold.

The underrated Japanese luxury SUV we’re focusing on here sits at 10,928 units for the quarter, which is a solid showing in this segment. It also carries a lot of weight for its brand, making up roughly a third of total sales on its own.

Don’t overlook the Acura MDX

One of the most underrated picks in the segment

Credit: Acura

The Acura MDX is one of those underrated luxury SUVs that quietly delivers Lexus-level reliability without much attention. It’s also Acura’s best-selling model in the U.S., which makes sense given how well it balances dependability, space, and price.

It’s the kind of SUV that feels properly versatile in daily use, with enough performance and premium touches to hold its own against more expensive European rivals.

Just as reliable as the Lexus RX

Credit: Acura

The RX is one of Lexus’ most dependable models, which makes it a natural benchmark for the MDX—another SUV known for strong long-term reliability.

According to iSeeCars, the MDX is expected to last around 153,225 miles or about 11.2 years, with a 22.9 percent chance of hitting 200,000 miles. A big reason for that durability is Acura’s J-series V-6 engines, which have a solid reputation for longevity in both the standard 3.5-liter and the turbocharged 3.0-liter Type S.

Base Trim Engine

3.5L V6 ICE

Base Trim Transmission

10-speed automatic

Base Trim Drivetrain

Front-Wheel Drive

Base Trim Horsepower

290 HP @6200 RPM

Base Trim Torque

267 lb.-ft. @ 4700 RPM

Base Trim Fuel Economy (city/highway/combined)

19/26/22 MPG

Base Trim Battery Type

Lead acid battery

Make

Acura

Model

MDX

For the RX, the publication breaks things down between the RX 350h hybrid and the turbocharged gas-powered RX 350. There’s no data yet for the RX 500h F Sport Performance hybrid, so it’s left out of the comparison.

As expected, the Toyota Hybrid System in the RX 350h comes out on top for durability. It’s projected to last around 166,936 miles or 14.3 years, with a 29.6 percent chance of reaching 200,000 miles.

The RX 350 isn’t far behind, though it comes in slightly lower with an estimated lifespan of 148,840 miles or 12.8 years and a 19.2% chance of hitting the 200,000-mile mark.

Lower maintenance costs than most European luxury SUVs

Beyond reliability alone, the MDX is also one of the more affordable luxury SUVs to own long-term. CarEdge estimates about $10,565 in maintenance and repair costs over the first 10 years, which is $1,888 below the luxury SUV average.

There’s also a projected 29 percent chance it’ll need a major repair in that timeframe, which is fairly modest for the segment.

Now compare that to the BMW X5, and the gap gets a lot bigger. CarEdge pegs it at around $19,460 over 10 years—roughly $7,007 above the industry average—with a 56 percent chance of a major repair, meaning ownership costs can end up nearly double what you’d see with the MDX.

Well-priced and just the right size

Credit: Acura

The MDX also lands in a pretty sharp pricing sweet spot. At $51,800 to start, this three-row midsize SUV sits almost neck-and-neck with the two-row RX, which begins at $52,375.

That’s a strong value argument on its own, especially if you still prefer a traditional V-6 over a turbo-four or hybrid setup. The base MDX already puts out 290 hp, and the Type S jumps to 355 hp—both comfortably ahead of the RX 350’s 275 horsepower.

Still, the MDX doesn’t quite get the same attention as the RX in the luxury space. Lexus simply has stronger brand pull, while Acura tends to fly a bit more under the radar despite offering a very similar overall package.

More power, more space, same Lexus RX money

And it quietly might be the better deal

Credit: Acura

If you’re looking at the RX, the MDX is absolutely worth a look too. The RX still wins if you want a reliable hybrid luxury SUV—that’s really its lane.

But if you’re sticking with a pure gas-powered setup, the MDX starts to look like the stronger overall pick in this match up.

Looks sporty inside and out

Credit: Acura

No matter which MDX you pick, you’re getting a sporty-looking luxury midsize SUV—but the A-Spec, A-Spec Advance, and especially the Type S are where it really looks its best. The standard versions lean more elegant, with satin silver accents, silver wheels, and a front end that mixes sport and sophistication pretty neatly.

Step up to the sport trims and things get noticeably sharper, with a more aggressive front bumper, 20-inch wheels in Shark Gray or Berlina Black, and on the Type S, even more performance-inspired exterior touches plus 21-inch wheels.

Inside, it’s a bit more of a mixed bag. The layout is genuinely great, with a wide center console and a deeply sculpted dash that gives it a proper sporty feel, but the heavy use of gloss black trim can make things feel a bit less special than rivals with more varied materials.

That said, it still feels plush and well put together overall—and you also get the bonus of a usable three-row layout, with a third row that’s actually decent for a midsize SUV.

V-6 power with genuinely sporty handling

Credit: Acura

Here’s why the MDX stands out over the RX. First off, the V-6 is silky smooth and backed by Honda’s J-series reputation, which has long been known for durability and overengineering.

The MDX Type S steps things up with a 3.0-liter turbo V-6 making 355 horsepower, and it’s also one of the better-sounding engines in the segment. With Brembo front brakes and adaptive dampers, it’s clearly set up to be the sportier, more engaging choice in the lineup.

The 10-speed automatic isn’t flawless—it could be a bit sharper, especially compared to BMW’s excellent ZF eight-speed—but overall, the MDX still leans more athletic than most three-row luxury SUVs in this class.

Credit: Acura

And it’s not like the non-Type S versions feel dull either—they’re still genuinely enjoyable to drive. With Super Handling All-Wheel Drive (SH-AWD), the MDX can actively shuffle torque around the rear axle, which gives it a surprisingly agile feel for a three-row SUV.

At the same time, ride comfort is well judged. It stays composed and comfortable in normal driving, but still tightens up when you push it, striking a nice balance between everyday ease and sporty intent. The Type S takes that even further thanks to its adaptive dampers, which widen the spread between comfort and firmness.

The one obvious trade-off is efficiency—the V-6 just isn’t especially frugal, even when compared to something like BMW’s B58 3.0-liter turbo inline-six in the X5. Still, there’s a lot to like here, and the mix of three-row practicality with real sporting ability makes the MDX a genuinely compelling option in the midsize luxury SUV space.