After 40,000 miles of rigorous daily driving, a long-term evaluation of the Mazda CX-90 Turbo S has revealed significant shortcomings in the three-row SUV’s driving experience, contradicting initial impressions based on its technical specifications. The vehicle, positioned as Mazda’s flagship luxury performance SUV, demonstrated that impressive hardware on paper does not always translate to satisfying real-world dynamics.
Initial Promise Versus Long-Term Reality
When the Mazda CX-90 Turbo S arrived for its extended test, expectations were understandably high. The vehicle boasts a sophisticated 3.3-liter turbocharged inline-six engine producing 340 horsepower and 369 lb-ft of torque, paired with a mild-hybrid system. The powertrain is complemented by an eight-speed automatic transmission and Mazda’s i-Activ all-wheel-drive system. On paper, these specifications suggested a premium, engaging driving experience that could challenge established luxury competitors.
During the first few thousand miles, the CX-90 Turbo S made a strong initial impression. The interior featured premium materials, including Nappa leather, authentic wood trim, and soft-touch surfaces throughout the cabin. The infotainment system, while not class-leading in responsiveness, offered intuitive controls and clear graphics. The second-row captain’s chairs provided excellent comfort for passengers, while the third row offered acceptable space for occasional use by adults or regular use by children.
The Driving Experience Breakdown
As the miles accumulated, fundamental flaws in the CX-90’s driving dynamics became increasingly apparent. The most significant disappointment centered on the vehicle’s suspension tuning and overall ride quality. Despite featuring a sophisticated multi-link rear suspension and adaptive dampers, the CX-90 failed to deliver the refined, composed ride expected in this segment.
Suspension and Ride Quality Issues
The adaptive suspension system, which theoretically should adjust to different driving conditions, demonstrated inconsistent behavior. On smooth highways, the ride could be acceptably comfortable, but on typical urban and suburban roads with imperfections, the suspension transmitted too much impact into the cabin. The damping felt overly firm without providing the corresponding benefit of precise body control. This created a jittery, unsettled ride that grew tiresome over extended periods.
Road noise became another significant concern as the test progressed. While initial miles suggested adequate sound insulation, the reality after thousands of miles revealed excessive tire roar on coarse pavement and noticeable wind noise around the side mirrors at highway speeds. The cabin never achieved the serene quietness that has become standard among premium three-row SUVs.
Powertrain Refinement Concerns
The inline-six engine, while powerful on paper, exhibited refinement issues that undermined the luxury experience. The mild-hybrid system’s integration felt less seamless than competing systems, with noticeable transitions between electric assist and engine power. The eight-speed automatic transmission, while generally responsive during aggressive acceleration, demonstrated occasional hesitation during moderate throttle inputs in urban driving.
Fuel economy also proved disappointing relative to expectations. Over 40,000 miles of mixed driving, the CX-90 Turbo S averaged just 22 mpg, falling short of both EPA estimates and real-world results from competitors with similar power outputs. The discrepancy was particularly noticeable during highway cruising, where the vehicle failed to achieve the efficiency promised by its mild-hybrid technology.
Handling and Steering Disappointments
Mazda has built its reputation on delivering engaging driving dynamics, even in mainstream vehicles. The CX-90 Turbo S represents a departure from this heritage. Despite featuring rear-biased all-wheel drive and sophisticated chassis components, the vehicle failed to deliver the precise, communicative steering that has characterized Mazda products for years.
Steering Feel and Precision
The electric power steering system provided adequate weight but lacked the feedback and linearity that driving enthusiasts expect from Mazda. On winding roads, the steering felt artificially heavy without corresponding precision, creating a disconnected sensation between driver and road. The vehicle’s substantial weight—over 5,000 pounds—became apparent during directional changes, with noticeable body roll despite the adaptive dampers being set to their firmest mode.
Brake performance also raised concerns as the test progressed. The initial bite was strong, but pedal feel grew inconsistent, with modulation becoming more challenging as the brakes heated during spirited driving. While never failing to stop the vehicle safely, the braking system lacked the progressive, confidence-inspiring character expected in a performance-oriented SUV.
Interior and Technology Long-Term Assessment
The CX-90’s interior, while initially impressive for its material quality, revealed durability concerns over 40,000 miles. The leather on frequently used surfaces showed more wear than expected, while some interior trim pieces developed minor rattles that proved difficult to isolate and eliminate. The third-row access mechanism, while clever in design, became less smooth with repeated use.
Infotainment and Technology Reliability
The infotainment system experienced several software glitches during the test period, including occasional unresponsiveness to touch inputs and unexpected reboots. The digital instrument cluster, while visually appealing, sometimes lagged behind actual vehicle status changes. These technological hiccups, while not catastrophic, diminished the premium experience Mazda sought to create.
Driver assistance systems performed adequately but fell short of class leaders. The adaptive cruise control occasionally reacted abruptly to vehicles merging into the lane ahead, and the lane-keeping assist provided inconsistent centering on highways with faded markings. While these systems functioned as designed, their refinement level trailed competitors from brands like Acura, Genesis, and Lexus.
Reliability and Maintenance Experience
Throughout the 40,000-mile test, the CX-90 Turbo S required only routine maintenance according to Mazda’s schedule. No major mechanical failures occurred, demonstrating basic reliability. However, several minor issues required attention, including a replacement of the windshield wiper motor under warranty and adjustment of a misaligned rear door that developed wind noise.
Cost of Ownership Analysis
Maintenance costs aligned with expectations for a vehicle in this segment, though fuel expenses proved higher than anticipated due to the disappointing real-world fuel economy. Resale value projections based on current market data suggest the CX-90 may face steeper depreciation than some competitors, reflecting market perception of the Mazda brand in the luxury space.
Competitive Context and Market Position
The CX-90 Turbo S enters a fiercely competitive segment dominated by established players like the Acura MDX, Genesis GV80, Lexus TX, and traditional luxury brands. While offering compelling specifications and attractive pricing relative to some competitors, the CX-90’s driving dynamics shortcomings place it at a significant disadvantage.
Prospective buyers considering the CX-90 Turbo S should prioritize extended test drives over varied road conditions. The vehicle’s flaws in ride quality and steering feel may not be immediately apparent during brief dealership test routes but become increasingly problematic over ownership. Competitors in this segment have refined their suspension tuning and noise insulation to higher standards, making direct comparison essential.
The automotive market’s shift toward electrification further complicates the CX-90’s value proposition. While its mild-hybrid system provides marginal efficiency benefits, competitors offer plug-in hybrid options with substantial electric-only range or fully electric alternatives that deliver superior refinement and lower operating costs.
For Mazda, the CX-90 represents an ambitious attempt to move upmarket, but the execution reveals the challenges of competing in the premium SUV segment. The brand’s traditional strengths in driving dynamics have not successfully translated to this larger, more complex vehicle. Future updates will need to address the fundamental ride and handling deficiencies identified during this extended test to make the CX-90 truly competitive.
Ultimately, the gap between the CX-90 Turbo S’s promising specifications and its disappointing real-world dynamics serves as a reminder that numbers on a spec sheet tell only part of the story. The subtle integration of powertrain, suspension, steering, and noise insulation separates adequate vehicles from exceptional ones in the premium segment. After 40,000 miles, the Mazda CX-90 Turbo S demonstrated that it has not yet mastered this integration, leaving drivers with a vehicle that promises more than it delivers where it matters most—behind the wheel.
