Acura
SLX
BMW
X5
Acura SLX vs BMW X5: 2023 Comparison
The short answer
Based on available data, the BMW X5 comes out ahead of the Acura SLX on fuel economy and power. Check the specs table and owner sentiment below for the full comparison before deciding between the two. Both are covered by real owner reports on CarWizz.
Specs side by side
What owners say
SLX
Overall
Nostalgic curiosity with minimal ownership data for ultra-rare rebadged luxury SUV, regarded as forgotten automotive oddity representing Acura's desperate 1990s attempt competing against Lexus LX450. Praised for extreme rarity creating collector appeal (most owners report never seeing another SLX), rugged Isuzu Trooper underpinnings providing bulletproof 3.2L/3.5L V6 engines and legitimate body-on-frame 4x4 capability, attractive 1990s Japanese luxury aesthetic, and simple mechanical design enabling straightforward maintenance. However, widespread acknowledgment centers on low-effort rebadging criticism (minimal differentiation from Isuzu Trooper beyond badges and leather), GM automatic transmission representing weak point prone to failure, expensive and difficult parts sourcing for Acura-specific trim pieces, commercial failure resulting only 2,095 total units sold United States 1996-1999 creating parts scarcity, and fundamental identity crisis positioning expensive rebadge versus authentic Honda engineering.
Best version to buy
3.5L V6 (1998-1999) The 1998-1999 model years with upgraded 3.5L DOHC V6 producing 215 hp (versus 190 hp 3.2L SOHC 1996-1997) represent most desirable specification offering improved power delivery and refinement. All SLX models feature identical luxury equipment including leather seats, power everything, premium audio, alloy wheels.
Known issues
- ⚠• GM 4L30-E automatic transmission failures, notorious weak point inherited from Isuzu Trooper, sluggish shifting, complete failures common high mileage, replacement cost $2,500-$4,000, universal criticism as inadequate for vehicle weight a…
X5
Overall
Sentiment is mixed and heavily dependent on the specific generation, powertrain, and ownership approach. For the current G05 generation (2019+), the inline-six (B58) powertrain is very frequently praised for its performance and noted reliability, with some owners calling it "super reliable" and "the best inline 6 in the world." The driving experience is consistently highlighted as a major strength, described as "performance oriented" with superior ride, handling, and road feel compared to key competitors. However, significant criticism is directed at the plug-in hybrid variant (50e), with one detailed owner report citing a "terrible" experience involving multiple, repeated drivetrain failures and extensive dealership visits.
Best version to buy
Insufficient owner data available to declare a single "best" version. Strong, recurrent praise is directed at models equipped with the B58 inline-six engine (e.g., xDrive40i), which is lauded for its reliability and performance.
Known issues
- ⚠. For long-term ownership (5-10 years), setting aside a significant fund for maintenance and repairs is considered mandatory. A pre-purchase inspection by a specialist is critical, especially for older or high-mileage examples.
The verdict
The BMW X5 is the better choice for most buyers.
It has better fuel economy on its best-equipped version than the Acura SLX, based on the data above. If power matters more to you than running costs, the Acura SLX is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Acura SLX or the BMW X5?
Owner reports show similar reliability sentiment for the Acura SLX and the BMW X5. Check the known issues listed above for specific differences between the two.
Which is better for families, the Acura SLX or the BMW X5?
Both seat a similar number of passengers based on our data. The Acura SLX is classed as a SUV, the BMW X5 as a SAV, which affects cargo space and ride height for family use.
Which has better fuel economy, the Acura SLX or the BMW X5?
The BMW X5 is more fuel-efficient on paper: 11.5-12.5 L/100km combined versus 15 L/100km for the Acura SLX, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the Acura SLX or the BMW X5?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the BMW X5 than the Acura SLX. See the known issues comparison above.