🚘 What Is the Infiniti QX50?
The Infiniti QX50 is a compact luxury crossover SUV produced by Infiniti, Nissan’s premium luxury division. Originally launched in 2007 as the Infiniti EX35/EX37, it was rebranded the QX50 in 2014 as part of Infiniti’s global lineup rename. The vehicle was produced through 2025 before being discontinued.
The QX50 sits in the highly competitive compact luxury SUV segment, going head-to-head with the BMW X3, Mercedes-Benz GLC, Audi Q5, and Lexus NX. It distinguishes itself through a distinctive design inspired by Infiniti’s signature “double-arch” grille and crescent-cut D-pillar, a premium cabin experience, and — from 2019 onwards — one of the most technologically advanced engines ever put into a production car: the VC-Turbo variable compression engine.
“The QX50 is a compact luxury crossover SUV known for its comfortable ride, high-quality interior, and advanced safety features. Powered by Infiniti’s VC-Turbo engine, it balanced performance and efficiency.” — Infiniti USA Official
Definition: What Does “QX50” Mean?
In Infiniti’s naming language, “Q” refers to performance-oriented vehicles (cars and crossovers), “X” indicates an all-wheel-drive crossover body style, and “50” denotes its position in the mid-size luxury segment. The name replaced the legacy “EX” badge in 2014.
📆 Infiniti QX50 Generations & History
The Infiniti QX50 has gone through two main generations, with its roots tracing back to 2007 under the EX nameplate.
2007–2012 — Infiniti EX35 / EX37 (Pre-QX50 Era)
Infiniti introduced the EX-series as its first compact luxury crossover. The EX35 used a 3.5-liter V6 (297 hp), later joined by the EX37 with a 3.7-liter V6. Rear-wheel drive was standard; AWD optional. The model was also sold in Japan as the Nissan Skyline Crossover.
2014–2017 — First Generation QX50 (Rebadge & Refresh)
In 2014, the EX37 was renamed QX50. The 2016 refresh extended the wheelbase by 81mm for improved rear legroom, added new L-shaped LED headlights, and updated styling. The engine remained the 3.7-liter V6 (325 hp) paired with a 7-speed automatic transmission.
2019–2025 — Second Generation QX50 (All-New Redesign)
A complete ground-up redesign debuted for 2019. Key changes: a new front-wheel-drive platform, the world’s first VC-Turbo variable compression 2.0L turbocharged engine (268 hp), a CVT transmission, and a far more technology-focused interior with dual touchscreens. Unfortunately, this generation brought significant reliability issues, particularly in 2019 and early years.
2021 — Mid-Cycle Update
In August 2020, Infiniti updated the QX50 for 2021 with new appearance packages, wireless connectivity, and software improvements to address some earlier issues — though reliability remained a concern.
2025 — Discontinuation
Infiniti confirmed the QX50 would be discontinued after 2025, with the brand shifting focus toward electrification and new model lines.
✅ Best Years to Buy: Infiniti QX50
When shopping for a used Infiniti QX50, these model years deliver the best balance of reliability, features, and value. They have the fewest NHTSA complaints, strongest owner satisfaction scores, and lowest long-term maintenance costs.
🏆 Top Picks (Best Years)
- 2022 Infiniti QX50
- 2023 Infiniti QX50
- 2024 Infiniti QX50
- 2014 Infiniti QX50
- 2015 Infiniti QX50
- 2017 Infiniti QX50
⚠️ Worst Years (Avoid)
- 2019 Infiniti QX50
- 2020 Infiniti QX50
- 2021 Infiniti QX50
- 2016 Infiniti QX50
- 2010 Infiniti EX
The 2022 QX50 stands out as the top recommendation for used buyers. It benefits from years of refinement to the second-gen platform, boasts wireless Apple CarPlay/Android Auto, a 10.8-inch head-up display, and has a significantly lower-than-average 10-year maintenance cost of approximately $10,657. Engine reliability improved substantially from the troubled 2019–2021 models. Fewer NHTSA complaints and higher J.D. Power scores make this the safest used QX50 choice.
The 2023 QX50 introduced the Sport trim (replacing Essential), added a wireless charging pad as standard, heated exterior mirrors, and remote start. It carries all five trim levels: Pure, Luxe, Sport, Sensory, and Autograph. Pricing ranges from approximately $42,000 to $59,000 new, but used examples represent excellent value. Reliability continued to improve year-over-year.
The 2024 QX50 is the most refined version of the second generation. With the VC-Turbo engine software now thoroughly tested and refined, engine failure rates dropped dramatically compared to 2019. The 2024 includes standard ProPilot Assist driver aids, updated safety systems, and a luxurious cabin. As a near-new vehicle it may still be under warranty, offering peace of mind.
For buyers on a budget, the 2014–2015 QX50 (first generation) offers remarkable value. These use the proven 3.7-liter V6 engine (325 hp), one of the most durable powerplants Infiniti ever made — derived from the Nissan/Infiniti VQ engine family that won multiple “10 Best Engines” awards. These models are simpler, easier to maintain, and less likely to suffer catastrophic failures. Expect good reliability if well-maintained.
The 2017 QX50 represents the peak of the first generation, benefiting from the 2016 wheelbase extension and all subsequent refinements. It offers a comfortable ride, a refined 3.7L V6, and all available first-gen features. With fewer complaints than the contentious second-generation 2019 model, it remains a solid used purchase option.
❌ Worst Years to Avoid: Infiniti QX50
These Infiniti QX50 model years have the highest number of NHTSA complaints, most serious reliability problems, and the highest long-term ownership costs. Avoid these unless buying at a severe discount with a thorough pre-purchase inspection.
Worst Year of All: 2019 Infiniti QX50
NHTSA complaint data shows the 2019 QX50 had the highest failure rates of any QX50 year. Forum threads are filled with catastrophic VC-Turbo engine failures, with some owners facing $30,000 engine replacement bills at under 30,000 miles. Avoid at all costs.
The 2019 QX50 was a ground-up redesign that introduced the world’s first production Variable Compression Turbo (VC-Turbo) engine. While revolutionary on paper, the first-year VC-Turbo suffered catastrophic failures. Owners at just 27,700 miles faced $30,000 engine replacements; some had engines seize on the highway with metal debris destroying the entire powertrain. Additionally, the Automatic Emergency Braking (AEB) system triggered randomly — slamming on brakes at highway speeds with no obstruction present, creating serious rear-end collision risks. The CVT transmission was also unpredictable. Fuel pump failures and squeaking noises were common secondary complaints.
The 2020 QX50 carried over with minimal changes and inherited the majority of the 2019’s problems. Engine reliability issues with the VC-Turbo persisted, AEB false triggering remained a concern, and CVT transmission complaints continued. Infiniti issued Technical Service Bulletins (TSBs) but not comprehensive fixes. Maintenance costs for 2020 models proved significantly higher than the segment average.
While Infiniti updated the 2021 QX50 with appearance packages and software updates, the fundamental reliability concerns weren’t fully resolved. Engine failure rates improved slightly but remained above average for the segment. Owner satisfaction surveys showed continuing dissatisfaction with the powertrain. The 2021 model year saw fewer catastrophic failures than 2019, but still ranks among the worst in the QX50 lineup.
The 2016 and 2017 QX50 had a variety of issues primarily related to faulty electrical components and a defective brake system. Owners reported issues with a non-functioning horn, navigation system malfunctions, and a finicky infotainment display. These are minor compared to the second-gen engine failures but worth noting. The 2016 is generally considered borderline — not a top pick, but not a disaster either.
📊 Infiniti QX50 Reliability Chart by Year
The chart below compares reliability scores (out of 10) for each major model year based on aggregated NHTSA complaint data, J.D. Power ratings, owner reports, and mechanic feedback.
🔧 Common Infiniti QX50 Problems by Year
Understanding the most frequently reported Infiniti QX50 problems helps you inspect a used vehicle effectively and negotiate a fair price. Here are the most common issues across model years:
| Problem | Affected Years | Severity | Avg. Repair Cost |
|---|---|---|---|
| VC-Turbo Engine Failure (metal shavings in oil, engine seize) | 2019, 2020, 2021 | HIGH | $15,000–$30,000 |
| False Automatic Emergency Braking (AEB triggers at highway speed) | 2019, 2020 | HIGH | $500–$2,000 (TSB) |
| CVT Transmission Issues (shuddering, unpredictable power delivery) | 2019–2021 | HIGH | $3,500–$8,000 |
| Fuel Pump Failure (sudden loss of power) | 2019, 2020, 2021 | MED | $600–$1,400 |
| Squeaking / Rattling Noises (cabin, suspension) | 2019–2022 | LOW | $100–$500 |
| Electrical Component Failures (horn, navigation, display) | 2016, 2017 | MED | $300–$1,500 |
| Defective Brake System (vibration, premature wear) | 2016, 2017 | MED | $400–$1,200 |
| Oil Consumption (excessive) | 2019–2021 | MED | $200–$600 (ongoing) |
| Sunroof Rattle | 2019–2022 | LOW | $150–$400 |
The 2019 VC-Turbo Engine: What Went Wrong?
The VC-Turbo (Variable Compression Turbo) engine was technologically groundbreaking — able to dynamically change its compression ratio from 8:1 to 14:1 for optimal efficiency or power. However, first-year production quality issues meant some units suffered from inadequate lubrication, premature bearing wear, and catastrophic metal-on-metal failures. Infiniti issued Technical Service Bulletins but never a formal recall, leaving many owners stranded with massive repair bills.
🛡️ Is the Infiniti QX50 Safe?
The Infiniti QX50 has generally earned strong safety ratings from both the NHTSA (National Highway Traffic Safety Administration) and the IIHS (Insurance Institute for Highway Safety), particularly for the second generation. Here’s a snapshot of safety performance:
5 ★
NHTSA Overall (2022–2024)
Good
IIHS Small Overlap Front
Accept.
IIHS Headlight Rating
Standard
Forward Collision Warning
Standard
Automatic Emergency Braking
Standard Safety Features (2022+ Models)
- ✅ Automatic Emergency Braking (AEB) with pedestrian detection
- ✅ Lane Departure Warning & Prevention
- ✅ Blind Spot Warning with rear cross-traffic alert
- ✅ Intelligent Cruise Control (ProPilot Assist on higher trims)
- ✅ Around View Monitor (360-degree camera system)
- ✅ Driver Attention Alert
- ✅ 8 Airbags including side curtain and knee airbag
Safety Concern: 2019 AEB False Triggering
One of the most dangerous issues with the 2019 QX50 was the Automatic Emergency Braking (AEB) system triggering randomly at highway speeds with no obstacles present. Multiple NHTSA complaints describe the car suddenly slamming on its brakes at 50+ mph, creating serious rear-end collision risks. This was addressed via a software update but not fully resolved for all units.
⚖️ Infiniti QX50: Advantages & Disadvantages
Here’s a comprehensive look at the pros and cons of owning an Infiniti QX50, helping you determine if this luxury crossover is right for your needs.
✅ Advantages
- Luxurious interior with premium materials, hand-stitched leather, and upscale finishes
- Innovative VC-Turbo engine — groundbreaking variable compression technology (when reliable)
- Comfortable ride quality — well-tuned suspension absorbs road imperfections
- Spacious cabin with generous rear legroom (especially post-2016)
- Strong performance — 268 hp turbocharged engine delivers responsive acceleration
- Advanced technology — dual touchscreens, ProPilot Assist, HUD
- Good fuel economy — up to 27 mpg highway with VC-Turbo (2022+)
- Distinctive design — unique styling stands out in its segment
- Available AWD for all-weather capability
- Competitive pricing vs. BMW X3 or Mercedes GLC
❌ Disadvantages
- Serious engine reliability in 2019–2021 — VC-Turbo failures can be catastrophic
- CVT transmission feels less sporty than dual-clutch competitors
- Limited cargo space vs. BMW X3, Mercedes GLC
- Infotainment complexity — dual-screen system criticized for usability
- No third-row option — strictly 5-passenger seating
- Higher repair costs for VC-Turbo issues vs. traditional engines
- Discontinued in 2025 — future parts availability may be concern
- Below-average towing capacity (1,500 lb) compared to rivals
- Base models feel plain — best features reserved for higher trims
- Resale value lower than Lexus NX or BMW X3
📐 Key Specs & Features: 2023 Infiniti QX50
Here are the key specifications for the 2023 Infiniti QX50, one of the best model years available:
Horsepower
268 hp
Torque
280 lb-ft
Transmission
CVT (Automatic)
Drivetrain
FWD / AWD
0–60 mph
~6.3 seconds
Fuel Economy
24 city / 30 hwy
Cargo Space
31.1 cu ft
Seating
5 passengers
Towing
1,500 lbs
Price (New)
$42,000–$59,000
Trim Levels
5 trims
🛒 How to Buy a Used Infiniti QX50: Step-by-Step Guide
Follow these expert steps to ensure you get the best Infiniti QX50 for your money and avoid costly mistakes.
Target the Right Model Year
Stick to 2022, 2023, or 2024 for a second-gen QX50, or 2014–2015/2017 for a first-gen. Absolutely avoid 2019, 2020, and 2021.
Run a VIN Check
Use NHTSA.gov or Carfax to check the vehicle’s recall history, accident reports, and service records. Verify all open recalls have been completed.
Check the Engine Oil for Metal Particles
For any 2019–2021 QX50, check the engine oil dipstick carefully — metal shavings in the oil are a definitive sign of VC-Turbo bearing failure. Walk away immediately if found.
Test the Automatic Emergency Braking
During a test drive on an open highway, confirm the AEB system does not activate unexpectedly. Erratic AEB is a major red flag on 2019–2020 models.
Get a Pre-Purchase Inspection
Have an independent Infiniti-certified mechanic inspect the vehicle. Pay particular attention to the VC-Turbo engine, CVT transmission, and all driver-assistance systems.
Check Warranty Coverage
Infiniti’s powertrain warranty covers 6 years/70,000 miles (original owner). Used buyers should confirm remaining coverage and consider an extended warranty for any 2019–2021 model.
Negotiate Based on Known Issues
Use documented reliability problems for the specific model year to negotiate a lower price. For a 2019–2021 without engine warranty, factor in potential $15,000–$30,000 engine replacement costs.
🏷️ Types of Infiniti QX50: Trim Levels Explained
The Infiniti QX50 is available in multiple trim levels, each offering progressively more features. Here’s a breakdown of the 2023 trim structure:
Standard features: 8-inch infotainment, Apple CarPlay/Android Auto, forward collision warning, automatic emergency braking, lane departure warning, 18-inch alloys, LED headlights, power driver seat, heated front seats.
Adds: 10.8-inch head-up display, 12.3-inch infotainment, panoramic moonroof, leather seating, 20-inch alloys, power-adjustable passenger seat, around view monitor, ProPilot Assist.
Adds over Luxe: Dynamic Digital Suspension, Sport mode, upgraded sport tuned steering, unique sport exterior styling, 20-inch dark finish wheels. Most popular trim level for a reason — best balance of performance and features.
Adds: Semi-aniline leather, 16-speaker Bose audio system, heated/ventilated front & rear seats, heated steering wheel, 360-degree camera, wireless charging. The true luxury experience.
Top of the range. Adds: open-pore wood trim, ultra-premium semi-aniline leather, dual-panel panoramic moonroof, all Sensory features plus exclusive design elements. The most complete and luxurious QX50 available.
❓ Frequently Asked Questions (FAQ)
The best year for the Infiniti QX50 is 2022 or 2023 for used buyers seeking the second generation, or 2014–2015 for a budget-friendly first-generation option. These years offer the best reliability scores, fewest complaints, and strongest owner satisfaction ratings. The 2022 also has the lowest long-term maintenance cost (~$10,657 over 10 years).
The 2019 Infiniti QX50 is definitively the worst model year. NHTSA data shows the highest failure rates of any QX50 year. Owners faced catastrophic VC-Turbo engine failures — sometimes at under 30,000 miles — costing $15,000–$30,000 to repair. The erratic Automatic Emergency Braking system also created serious safety hazards on public roads. Avoid the 2019 model entirely.
The Infiniti QX50 has an average reliability rating of approximately 3.5 out of 5. Reliability varies dramatically by model year. The first-generation (2014–2017) and the 2022–2024 models are quite reliable. The 2019–2021 models are significantly below average for the segment. Overall, if you choose the right year, the QX50 can be a dependable luxury crossover.
The most commonly reported Infiniti QX50 problems include: (1) VC-Turbo engine failure with metal shavings in oil (2019–2021), (2) False automatic emergency braking triggering at highway speed (2019–2020), (3) CVT transmission shuddering and unpredictable behavior (2019–2021), (4) Fuel pump failure (2019–2021), (5) Electrical component failures including navigation and horn (2016–2017), and (6) Squeaking/rattling noises from the cabin or suspension.
The Infiniti QX50 is safe to buy used if you choose the right model year. The 2022–2024 models earned 5-star NHTSA overall ratings and strong IIHS scores, with standard forward collision warning, AEB, blind spot monitoring, and lane departure prevention. Avoid the 2019–2021 models unless you have warranty coverage or budget for potentially major repairs.
The 2019 QX50 was a complete redesign featuring the world’s first production variable compression turbocharged engine (VC-Turbo). While revolutionary, the technology was rushed to market with first-year production quality issues. Inadequate lubrication in some units caused premature bearing wear and catastrophic engine failures. The AEB software was also poorly calibrated, triggering dangerously at highway speeds. Combined, these issues created a “perfect storm” of reliability problems.
A well-maintained Infiniti QX50 can last 150,000–200,000 miles. The first-generation models with the proven 3.7L VQ V6 engine have demonstrated excellent longevity. The second-generation VC-Turbo engine’s lifespan is less proven, but 2022+ examples with proper maintenance should achieve similar mileage. Regular oil changes, timely transmission service, and adherence to Infiniti’s maintenance schedule are key.
The VC-Turbo (Variable Compression Turbo) is Infiniti’s revolutionary 2.0-liter turbocharged 4-cylinder engine that can dynamically vary its compression ratio between 8:1 (high performance) and 14:1 (fuel efficiency). It produces 268 horsepower and 280 lb-ft of torque. The technology allows it to function like a sports car engine when you need power and a fuel-efficient engine when you don’t. Early units (2019) had significant reliability problems; later versions are much improved.
No. The Infiniti QX50 was discontinued after the 2025 model year. Infiniti produced the QX50 (originally under the EX nameplate) from 2007 through 2025 — an 18-year run. Infiniti is shifting its lineup focus toward electrification and new model architectures. The QX55 (a coupe-crossover version) was also available from 2021–2025.
The QX50 is competitive but not class-leading. Compared to the BMW X3: QX50 has a more comfortable ride but less sporty handling. Vs. Audi Q5: QX50 is less refined overall but offers unique VC-Turbo technology. Vs. Lexus NX: Lexus has better long-term reliability ratings and stronger resale value. The QX50’s pricing is generally more competitive than all three rivals, making it a strong value proposition — particularly the 2022–2023 models.
In Infiniti’s naming system: “Q” = performance-oriented vehicle, “X” = crossover/SUV body style with AWD capability, and “50” = positioning in the mid-range compact luxury segment (below QX60 and QX80). The QX50 replaced the “EX” badge in 2014 as part of Infiniti’s global lineup unification, where all models were renamed under “Q” for cars/crossovers and “QX” for SUVs/crossovers.
