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Infiniti M IV (Y51) M56 V8 (420 Hp) Automatic
Overall Rating
Infiniti M:
The Infiniti M is a line of mid-size luxury cars from the Infiniti luxury division of Nissan. From 2013 on it has been marketed as the Infiniti Q70, reflecting the company's later naming formula.
The first iteration was the M30 Coupé/Convertible, rebadged variants of the JDM Nissan Leopard. After a hiatus, the M nameplate was used for Infiniti's short-lived mid-luxury M45 sedan, a rebadged version of the Japanese-spec Nissan Gloria and Infiniti's subsequent flagship M35/45 and M37/56/35h/30d, based on the JDM Nissan Fuga....(Read more on Wikipedia)
IV (Y51) Overview:
Infiniti M (IV (Y51)). With 565 Nm of torque, it offers ample pulling power. With a weight of 1827 kg, it falls in the mid‑range. Rear‑wheel drive offers dynamic handling and sporty feedback. A four-door car with a separate trunk, ideal for families and daily commuting. Seating for 5 makes it ideal for daily use.
M56 V8 (420 Hp) Automatic Verdict:
Performance Verdict
Exceptional power delivery from the large V8, offering thrilling acceleration and effortless highway cruising. A true performance luxury sedan.
Fuel Economy
As expected for a powerful V8, fuel economy is a significant drawback, especially in urban environments. Best for those prioritizing power over efficiency.
Pros and Cons:
Pros:
- • Powerful and refined engine options, especially the V8
- • Luxurious and well-appointed interior with quality materials
- • Distinctive styling that stands out from German rivals
- • Comfortable ride quality, particularly on long journeys
- • Strong safety ratings from US testing agencies
Cons:
- • Fuel economy can be poor, especially with V8 models
- • Infotainment system can feel dated compared to competitors
- • Rear seat space is adequate but not class-leading
- • Resale value typically lags behind German luxury brands
- • Limited brand recognition in some markets
Specifications:
Specifications are compared to those of the previous generation(III (Y50): 2008 - 2010).
| General: | |
|---|---|
| Brand: | Infiniti |
| Model: | M |
| Generation: | IV (Y51) |
| Modification (Engine): | M56 V8 (420 Hp) Automatic |
| Start of production: | 2010 |
| End of production: | 2019 |
| Powertrain Architecture: | Internal Combustion engine |
| Body type: | Sedan |
| Seats: | 5 |
| Doors: | 4 |
| Engine: | |
|---|---|
| Power: | 420 Hp @ 6000 rpm. Same horsepower |
| Power per litre: | 75.6 Hp/l [10mm more] |
| Torque: | 565 Nm @ 4400 rpm. |
| Engine Model/Code: | VK56VD More details about the engine VK56VD |
| Engine displacement: | 5552 |
| Number of cylinders: | 8 |
| Engine configuration: | V-engine |
| Number of valves per cylinder: | 4 |
| Fuel injection system: | Direct injection |
| Valvetrain: | DOHC |
| Engine oil capacity: | 6 l |
| Coolant: | 10.9 l |
| Engine layout: | Front, Longitudinal |
| Cylinder Bore: | 98 mm mm |
| Piston Stroke: | 92 mm mm |
| Compression ratio: | 11.5:1 |
| Maximum engine speed: | 6700 rpm. |
| Performance: | |
|---|---|
| Fuel Type: | Petrol (Gasoline) |
| Fuel consumption (economy) - urban: | 14.7 l/100 km |
| Fuel consumption (economy) - extra urban: | 9.4 l/100 km |
| Weight-to-power ratio: | 4.4 kg/Hp, 229.9 Hp/tonne |
| Weight-to-torque ratio: | 3.2 kg/Nm, 309.3 Nm/tonne |
| Space: | |
|---|---|
| Kerb Weight: | 1827 |
| Max. weight: | 2333 |
| Max load: | 506 |
| Trunk (boot) space - minimum: | 422 l |
| Fuel tank capacity: | 76 l |
| Size: | |
|---|---|
| Length: | 4945 mm mm [10mm more] |
| Width: | 1844 mm mm [49mm more] |
| Height: | 1501 mm mm [8mm less] |
| Wheelbase: | 2901 mm mm [1mm more] |
| Front track: | 1575 mm |
| Rear (Back) track: | 1570 mm |
| Ride height (ground clearance): | 150 mm |
| Minimum turning circle (turning diameter): | 11.2 m [above average] |
| Powertrain: | |
|---|---|
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears | 7 |
| Transmission type | Automatic |
| Front brakes | Ventilated discs, 320.04x27.94 mm [Best for performance and cooling.] |
| Rear brakes | Ventilated discs, 307.34x15.24 mm [Best for performance and cooling.] |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/50 R18 V; 245/40 R20 W |
| Wheel rims size | 8.0J x 18; 9.0J x 20 |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
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