The Infiniti G25 Sedan, specifically the facelifted version produced from September 2011 to April 2013, represented a key entry point into the luxury sport sedan market for the Infiniti brand. Part of the V36 generation, this model aimed to offer a balance of performance, refinement, and value. Positioned below the G37 in the lineup, the G25 catered to buyers seeking a more fuel-efficient and accessible luxury experience without sacrificing the brand’s core driving dynamics. It was primarily sold in North America, where it competed with established players like the Acura TL and Lexus ES.
Technical Specifications
| Brand | Infiniti |
| Model | G |
| Generation | G25 Sedan (V36, facelift 2011) |
| Type (Engine) | G25 2.5 V6 (218 Hp) Automatic |
| Start of production | September, 2011 |
| End of production | April, 2013 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban (EPA) | 11.8 l/100 km (19.9 US mpg) |
| Fuel consumption (economy) – extra urban (EPA) | 8.1 l/100 km (29 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Emission standard | LEV2 |
| Weight-to-power ratio | 7.4 kg/Hp, 136 Hp/tonne |
| Weight-to-torque ratio | 6.3 kg/Nm, 158.5 Nm/tonne |
| Power | 218 Hp @ 6400 rpm |
| Power per litre | 87.3 Hp/l |
| Torque | 254 Nm @ 4800 rpm (187.34 lb.-ft. @ 4800 rpm) |
| Maximum engine speed | 7500 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | VQ25VHR |
| Engine displacement | 2498 cm3 (152.44 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 85 mm (3.35 in.) |
| Piston Stroke | 73.3 mm (2.89 in.) |
| Compression ratio | 10.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.9 l (5.18 US qt | 4.31 UK qt) |
| Coolant | 8.3 l (8.77 US qt | 7.3 UK qt) |
| Kerb Weight | 1603-1611 kg (3534.01 – 3551.65 lbs.) |
| Max. weight | 2120 kg (4673.8 lbs.) |
| Max load | 509-517 kg (1122.15 – 1139.79 lbs.) |
| Trunk (boot) space – minimum | 382 l (13.49 cu. ft.) |
| Fuel tank capacity | 76 l (20.08 US gal | 16.72 UK gal) |
| Length | 4773 mm (187.91 in.) |
| Width | 1773 mm (69.8 in.) |
| Height | 1453 mm (57.2 in.) |
| Wheelbase | 2850 mm (112.2 in.) |
| Front track | 1519 mm (59.8 in.) |
| Rear (Back) track | 1529 mm (60.2 in.) |
| Ride height (ground clearance) | 130 mm (5.12 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle (turning diameter) | 10.8 m (35.43 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission |
| Front suspension | Double wishbone, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer |
| Front brakes | Ventilated discs, 320.04×27.94 mm |
| Rear brakes | Ventilated discs, 307.34×15.24 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/55 R17 95V |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
The heart of the G25 was the VQ25VHR 2.5-liter V6 engine. This engine, part of Nissan’s highly regarded VQ family, featured a 60-degree V-angle and utilized a dual overhead camshaft (DOHC) valvetrain with continuously variable valve timing (CVVT). The ‘HR’ designation signified “High Revolution,” indicating a focus on higher engine speeds and improved breathing. The engine employed multi-port fuel injection and a compression ratio of 10.3:1. The VQ25VHR produced 218 horsepower at 6400 rpm and 254 Nm (187.34 lb-ft) of torque at 4800 rpm. Paired exclusively with a 7-speed automatic transmission, the G25 aimed for smooth and efficient power delivery. This transmission featured adaptive shift control, adjusting shift points based on driving conditions and driver input. The transmission was designed to balance fuel economy with acceptable acceleration.
Driving Characteristics
The G25 2.5L Automatic offered a comfortable and refined driving experience. While not as overtly sporty as the G37, it provided adequate acceleration for everyday driving. The 7-speed automatic transmission, while smooth, wasn’t particularly quick to downshift, resulting in a slightly less responsive feel compared to the 6-speed manual transmission available on the G37. The gear ratios were tuned for fuel efficiency, prioritizing higher gears at cruising speeds. The rear-wheel-drive configuration contributed to balanced handling, although the relatively modest power output limited its potential for spirited driving. Compared to the G37, the G25 felt noticeably less powerful, especially during overtaking maneuvers. However, it offered a more relaxed and fuel-efficient alternative for drivers who didn’t prioritize outright performance.
Equipment & Trim Levels
The G25 Sedan came reasonably well-equipped as standard. Typical features included leather upholstery, power-adjustable front seats, a premium audio system, automatic climate control, and a rearview camera. Optional extras included a navigation system, a sunroof, and upgraded interior trim materials. The G25 was generally offered in a single, well-equipped trim level, with options packages available to add further luxury and convenience features. Interior color choices were typically limited to black, gray, and wheat leather options. Dashboard configuration was consistent across all G25 models, featuring a driver-focused layout with metallic accents.
Chassis & Braking
The G25 Sedan utilized a double wishbone front suspension and an independent multi-link rear suspension, both incorporating a transverse stabilizer bar to minimize body roll. The suspension was tuned for a balance of comfort and handling. Braking duties were handled by ventilated discs on all four wheels, providing adequate stopping power for the vehicle’s weight and performance. Anti-lock braking system (ABS) was standard. The G25’s chassis was designed to provide a stable and predictable driving experience, although the relatively narrow tires (225/55 R17) limited grip in demanding situations. The rear suspension setup was similar to that of the G37, but with slightly softer spring rates to accommodate the lower power output and target a more comfortable ride.
Market Reception & Comparison
The Infiniti G25 was generally well-received by automotive critics as a value-oriented luxury sedan. Reviewers praised its comfortable ride, refined interior, and fuel efficiency. However, some criticized its lack of outright performance compared to its rivals and the G37. Fuel economy figures were competitive for its class, averaging around 19-29 mpg depending on driving conditions. Reliability was generally good, although some owners reported minor issues with the infotainment system. Compared to the G37, the G25 offered a lower price of entry but sacrificed performance and a more engaging driving experience. Against competitors like the Acura TL and Lexus ES, the G25 offered a more sporty driving experience but lacked the established reputation and brand recognition of its rivals.
Legacy
The Infiniti G25, while a relatively short-lived model, remains a popular choice in the used car market. The VQ25VHR engine is known for its durability and reliability, provided it receives regular maintenance. The 7-speed automatic transmission has also proven to be generally reliable. However, potential buyers should be aware of potential issues with the infotainment system and the possibility of oil consumption as the engine ages. The G25 represents a compelling option for buyers seeking an affordable and reliable luxury sedan with a sporty pedigree. Its blend of comfort, refinement, and fuel efficiency continues to appeal to a wide range of drivers.
