The 2015 Infiniti Q70, formerly known as the M sedan, is a mid-size luxury sedan that was part of Infiniti's lineup from 2003 to 2019. For 2015, it received a mid-cycle refresh, offering both a standard wheelbase and a longer Q70L version. Key trims included the 3.7 RWD, 3.7 AWD, 5.6 RWD, and 5.6 AWD. Its popularity stems from its blend of strong performance, upscale interior, and distinctive styling, often positioned as a more engaging alternative to some German rivals. Pricing at launch ranged from approximately $49,000 to $65,000.
The Good
The 2015 Q70 excels with potent V6 and V8 engine options, a supple ride ensuring supreme comfort, and a sophisticated, driver-focused interior. Its bold styling appeals to emotion, while strong reliability and competitive pricing offer practical value for luxury sedan seekers.
The Bad
Potential owners should be aware of slightly dated infotainment technology compared to newer rivals, a smaller trunk in standard wheelbase models, and a less engaging driving dynamics for ultimate sport sedan enthusiasts. Fuel economy can also be a concern with the V8.
2015 Infiniti Q70: Quick Overview
- Engine Options:
- 3.7-liter V6
- 5.6-liter V8 - Horsepower:
- 3.7L V6: 328 hp @ 7,000 rpm
- 5.6L V8: 416 hp @ 6,000 rpm - Torque:
- 3.7L V6: 267 lb-ft @ 5,200 rpm
- 5.6L V8: 414 lb-ft @ 4,400 rpm - Fuel Economy (EPA Estimated MPG):
- 3.7L V6 RWD: 18 city / 26 highway
- 3.7L V6 AWD: 17 city / 24 highway
- 5.6L V8 RWD: 17 city / 25 highway
- 5.6L V8 AWD: 16 city / 23 highway - 0-60 Times (Approximate):
- 3.7L V6: Around 5.8 - 6.1 seconds
- 5.6L V8: Around 4.7 - 5.0 seconds - Towing Capacity: Not typically advertised or a primary feature for this luxury sedan class; generally not equipped for towing.
- Key Trim-Level Features (General):
- Standard Features (across trims): Leather upholstery, heated front seats, dual-zone automatic climate control, power-adjustable front seats, Bluetooth connectivity, rearview camera, keyless entry with push-button start, automatic headlights, LED taillights.
- 3.7 RWD/AWD: Base engine, rear-wheel or all-wheel drive.
- 5.6 RWD/AWD: More powerful V8 engine, rear-wheel or all-wheel drive.
- Available Options/Packages: Navigation system, premium Bose audio, panoramic sunroof, heated and ventilated front seats, heated rear seats (especially on Q70L), adaptive cruise control, blind-spot monitoring, lane departure warning, forward collision warning, sport-tuned suspension (on Sport trims), 19-inch alloy wheels.
2015 Infiniti Q70 Specifications
Vehicle Information
| Year | 2015 |
| Make | Infiniti |
| Model | Q70 |
| Trim | - |
| Style | - |
| Type | Sedan |
| Category | Mid-Size Car |
Manufacturing Details
| Made In | Japan |
| Manufacturing City | KYUSHU PLANT, MIYAKO-GUN |
Dimensions
| Doors | 4-Door |
| Curb Weight | 4224 pounds |
| Gross Vehicle Weight Rating | - |
| Overall Height | 59.6 inches |
| Overall Length | 194.7 inches |
| Overall Width | 72.6 inches |
| Wheelbase Length | 114.2 inches |
| Standard Seating | 5 |
Engine & Performance
| Engine | Premium Unleaded V-8 5.6 L/339 |
| Engine Size | 5.6L |
| Engine Cylinders | 8 |
| Transmission | 7 Automatic w/OD |
| Transmission Type | Automatic |
| Transmission Speeds | 7-Speed |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | 4-Wheel ABS |
| Steering Type | Rack & Pinion |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $64,550 |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 2015 Infiniti Q70 Have?
The 2015 Infiniti Q70 generally enjoys a reputation for solid reliability, inheriting a robust powertrain from its predecessor. However, like any vehicle, some owners have reported specific issues. A common concern, though not exclusive to the 2015 model year, revolves around the infotainment system. Some users have experienced glitches, unresponsiveness, or navigation system errors, which can sometimes be resolved with software updates. Another area sometimes mentioned is suspension noise or premature wear, particularly on models driven aggressively or on rough roads, though this is not a widespread epidemic. Premature wear of brake pads and rotors has also been a point of discussion for some owners, potentially linked to driving style or conditions. Regarding recalls, the 2015 Q70 had a few, the most significant concerning the Takata airbag inflator, which affected a vast number of vehicles across various manufacturers and model years, including Infiniti. Owners are advised to check their specific VIN for any outstanding recalls. Long-term reliability appears to be good, especially with the V6 engine, which is known for its durability. The V8, while powerful, can present more complex and potentially costly repairs as it ages. Transmission issues are infrequent, but as with any automatic transmission, regular fluid changes are crucial for longevity. Electrical gremlins, while not rampant, can occur in older luxury vehicles, so ensuring all electronic components are functioning correctly is wise during inspection. Overall, the 2015 Q70 is considered a reliable luxury sedan, but proactive maintenance and awareness of potential minor electronic or suspension quirks are recommended.
How long will the 2015 Infiniti Q70 last?
Based on owner data and typical luxury sedan usage, the 2015 Infiniti Q70 can realistically be expected to last between 150,000 to 200,000 miles, and often more, with diligent maintenance. Vehicles driven primarily on highways will likely see higher mileage figures. Its long-term durability is strong, particularly for the V6 powertrain which is known for its robustness. Weaknesses that may emerge over time include potential wear in the suspension components and occasional electronic glitches in the infotainment or comfort systems. Regular oil changes, transmission fluid flushes, and attention to brake wear are key to maximizing its lifespan. Owners who prioritize consistent servicing can anticipate many years of comfortable and reliable service from their Q70.
What Technology & Safety Features are Included?
The 2015 Infiniti Q70 offers a blend of established technology and safety features aimed at comfort and convenience. Standard tech includes a 7-inch color display, Bluetooth hands-free phone and streaming audio, USB/iPod connectivity, and a rearview camera. Optional technology upgrades were plentiful, with the sought-after Infiniti Navigation System featuring an 8-inch touchscreen, voice recognition, and SiriusXM Traffic and Travel Link. A premium 10-speaker Bose audio system was also a popular option, delivering rich sound quality. For entertainment, standard auxiliary audio jacks and USB ports are included. Driver-assistance features on higher trims or via optional packages included Intelligent Cruise Control (ICC), which could maintain a set distance from the vehicle ahead, Blind Spot Warning (BSW) and Blind Spot Intervention (BSI), helping to prevent lane changes into occupied adjacent lanes, and Lane Departure Warning (LDW) and Lane Departure Prevention (LDP) systems. Forward Collision Warning (FCW) and Forward Emergency Braking (FEB) were also available. Safety is addressed with standard antilock brakes, stability and traction control, and a suite of airbags. The 2015 Q70 received good crash-test ratings from the IIHS, earning a Top Safety Pick+ designation, and performed well in NHTSA testing, achieving a 4-star overall safety rating. These ratings underscore its structural integrity and effectiveness of its safety systems.
What Colors Options are Available?
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In the meantime, feel free to explore the other sections for more content.
In the meantime, feel free to explore the other sections for more content.
2015 Infiniti Q70 Prices and Market Value
When new, the 2015 Infiniti Q70 had a starting MSRP generally ranging from $49,000 for the base 3.7 RWD model to around $65,000 for the top-tier 5.6 AWD trims. Current used market prices for a 2015 Q70 typically fall between $14,000 and $22,000, heavily dependent on mileage, condition, trim level, and options. The Q70 experiences moderate depreciation, which is typical for luxury vehicles. Factors affecting its resale value include overall condition, maintenance history, the presence of desirable options like all-wheel drive or premium packages, and the mileage. Models with lower mileage and a documented service history will command higher prices. The refresh in 2015 also helped maintain its appeal compared to pre-refresh models, though it's still a few years older than newer competitors.
2015 Infiniti Q70 Cost of Ownership
Owning a 2015 Infiniti Q70 leans towards the costly side compared to non-luxury vehicles. Insurance premiums will likely be higher due to its luxury classification and replacement cost. Fuel costs can be significant, especially with the V8 engine, though the V6 offers more reasonable economy. Maintenance costs are moderate to high; while routine services are comparable to other luxury brands, specialized parts or repairs can be expensive. Repair costs can also be a factor, particularly for complex electronic systems or powertrain components as the vehicle ages. Overall, the Q70 is not an economical car to own, but its ownership experience is typically commensurate with its luxury positioning.
2015 Infiniti Q70 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
20 gallons
City Mileage
16 miles/gallon
Highway Mileage
23 miles/gallon
2015 Infiniti Q70 Safety Rating
NHTSA
2015 Infiniti Q70 Warranty
Basic
Original warranty
48 months / 60,000 miles
Estimated remaining
Expired
Corrosion
Original warranty
84 months / unlimited miles
Estimated remaining
Expired
Drivetrain
Original warranty
72 months / 70,000 miles
Estimated remaining
Expired
Roadside Assistance
Original warranty
48 months / unlimited miles
Estimated remaining
Expired
2015 Infiniti Q70 Insurance
Insurance for a 2015 Infiniti Q70 is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2015 Infiniti Q70 Compare to Other Sedan?
The 2015 Infiniti Q70 competes in the competitive mid-size luxury sedan segment against stalwarts like the BMW 5 Series, Mercedes-Benz E-Class, Audi A6, and the Lexus GS. In terms of performance, the Q70's V6 and V8 engines offer strong, engaging power, rivaling or exceeding many base models from its competitors. The V8 is particularly potent. Features-wise, the 2015 Q70 offers a good array of standard and optional luxury and tech features, though its infotainment system might feel slightly less intuitive or modern than the latest offerings from German rivals, especially compared to BMW's iDrive or Mercedes' COMAND. Reliability is generally good for the Q70, often considered on par with or better than some European counterparts, particularly the Lexus GS which is renowned for its bulletproof dependability. The 5 Series and E-Class can be more expensive to maintain and repair long-term. Price is where the Q70 often shines; it typically offers more power and luxury features for a lower sticker price, both new and used, than its German rivals. Similar alternatives include the Lexus GS, offering a different flavor of Japanese luxury with exceptional reliability and a more comfort-oriented ride. A slightly sportier alternative might be the Cadillac CTS, offering sharp handling and a distinct American luxury feel. For those prioritizing driving dynamics and cutting-edge tech, a 5 Series or E-Class might still be the benchmark, but at a higher cost. The Q70 represents a strong value proposition for those seeking powerful performance and a comfortable, upscale cabin without the premium price tag often associated with its more established European competitors.
Final Verdict: Is the 2015 Infiniti Q70 a Good Sedan?
The 2015 Infiniti Q70 is an excellent choice for buyers seeking a luxury sedan that offers substantial power, a comfortable ride, and upscale amenities without the top-tier price tag of some German competitors. It's ideal for individuals or families who prioritize performance and comfort, and perhaps appreciate a less common luxury marque. It is definitely worth buying, particularly on the used market where its value proposition becomes even more compelling. Buyers should focus on well-maintained examples, especially considering its age. The V6 models offer a great balance of performance and efficiency, while V8 models cater to those wanting exhilarating acceleration. Opting for a higher trim level or a car equipped with desirable packages will enhance the ownership experience. Buying used is strongly recommended to avoid initial steep depreciation.
Simon A
Simon is a contributor to VinCheck, where he provides articles and reviews on various automotive topics. His work focuses on delivering accurate and up-to-date information about used cars, helping readers make informed decisions.