The Nissan Altima IV 2.5, equipped with a 2.5-liter inline-four engine producing 177 horsepower and a Continuously Variable Transmission (CVT), represented a significant step forward for Nissan in the mid-size sedan segment. Produced from 2007 through 2012, this variant occupied a central position within the fourth-generation Altima (L32) lineup, offering a balance of fuel efficiency, comfortable driving dynamics, and modern features. It was designed to appeal to a broad range of buyers seeking a reliable and practical family sedan. This model played a key role in establishing the Altima as a competitive force against established rivals like the Honda Accord and Toyota Camry.
Technical Specifications
| Brand | Nissan |
| Model | Altima |
| Generation | Altima IV |
| Type (Engine) | 2.5 (177 Hp) CVT |
| Start of production | 2007 |
| End of production | 2012 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel Type | Petrol (Gasoline) |
| Maximum speed | 235 km/h (146.02 mph) |
| Power | 177 Hp @ 6000 rpm |
| Power per litre | 71.1 Hp/l |
| Torque | 244 Nm @ 4000 rpm (179.97 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | QR25DE |
| Engine displacement | 2488 cm3 (151.83 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 89 mm (3.5 in.) |
| Piston Stroke | 100 mm (3.94 in.) |
| Compression ratio | 9.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 4.6 l (4.86 US qt | 4.05 UK qt) |
| Coolant | 7.6 l (8.03 US qt | 6.69 UK qt) |
| Max. weight | 1905 kg (4199.81 lbs.) |
| Trunk (boot) space – maximum | 433 l (15.29 cu. ft.) |
| Fuel tank capacity | 76 l (20.08 US gal | 16.72 UK gal) |
| Length | 4821 mm (189.8 in.) |
| Width | 1796 mm (70.71 in.) |
| Height | 1471 mm (57.91 in.) |
| Wheelbase | 2776 mm (109.29 in.) |
| Front track | 1549 mm (60.98 in.) |
| Rear (Back) track | 1549 mm (60.98 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 1 gears, automatic transmission CVT |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Tires size | 215/55 R17 |
| Wheel rims size | 17 |
Powertrain & Engine Architecture
The heart of the Altima 2.5 was the QR25DE engine, a 2.5-liter inline-four cylinder powerplant. This engine featured multi-port fuel injection and a relatively conservative 9.5:1 compression ratio. The QR25DE was known for its durability and smooth operation. The engine utilized a timing chain, reducing maintenance compared to timing belts. Paired with this engine was Nissan’s Xtronic CVT (Continuously Variable Transmission). This transmission was designed to maximize fuel efficiency by providing an infinite number of gear ratios within its operating range. Unlike traditional automatic transmissions with fixed gears, the CVT allowed the engine to operate at its most efficient RPM for any given speed. The CVT featured a sub-planetary gearset and a belt-drive system.
Driving Characteristics
The 177-horsepower and 179.97 lb-ft of torque delivered by the QR25DE/CVT combination provided adequate, though not exhilarating, performance. Acceleration from 0 to 60 mph typically took around 9-10 seconds. The CVT, while prioritizing fuel economy, sometimes exhibited a “rubber band” feel, where engine RPM would rise quickly under acceleration without a corresponding immediate increase in vehicle speed. This was a common characteristic of early CVTs. Compared to the more powerful 3.5-liter V6 Altima, the 2.5 felt noticeably less responsive. However, the 2.5 offered significantly better fuel economy. The CVT’s programming was tuned for smooth transitions and comfortable cruising, making it well-suited for daily commuting.
Equipment & Trim Levels
The Altima 2.5 CVT typically came standard with features such as air conditioning, power windows and locks, a CD player with auxiliary input, and keyless entry. Higher trim levels, such as the 2.5 S and 2.5 SL, added features like alloy wheels, a sunroof, upgraded audio systems (often including a six-disc CD changer), and leather upholstery. Optional extras included navigation systems, Bluetooth connectivity, and a premium Bose audio system. Interior upholstery was typically cloth on the base models, with leather available on higher trims. Dashboard configurations were generally consistent across the lineup, featuring a straightforward layout with easy-to-use controls.
Chassis & Braking
The Altima IV utilized a front-wheel-drive platform with an independent MacPherson strut suspension in the front and a multi-link suspension in the rear. This suspension setup provided a comfortable ride quality, absorbing bumps and irregularities in the road effectively. Braking duties were handled by ventilated discs in the front and solid discs in the rear. Anti-lock brakes (ABS) were standard. The 2.5 models generally featured smaller brake rotors compared to the V6 models, reflecting the lower weight and performance capabilities. Stabilizer bars were included both front and rear to reduce body roll during cornering.
Market Reception & Comparison
The Altima 2.5 CVT was generally well-received by automotive critics as a practical and fuel-efficient mid-size sedan. It was praised for its comfortable ride, spacious interior, and user-friendly features. However, some reviewers noted the CVT’s somewhat uninspiring driving experience and the engine’s lack of outright power. Compared to the V6 Altima, the 2.5 offered significantly better fuel economy – typically around 23 mpg city and 31 mpg highway. The 2.5 was positioned as the entry-level and most fuel-efficient option in the Altima lineup, appealing to buyers prioritizing practicality and affordability over performance.
Legacy
The QR25DE engine, when properly maintained, proved to be a reliable and durable powerplant. The CVT, while initially met with some skepticism, also demonstrated reasonable long-term reliability, although some units experienced issues with belt wear or valve body failures. Today, used Altima 2.5 models from this generation are readily available and generally offer good value for the money. They remain a popular choice for budget-conscious buyers seeking a dependable and fuel-efficient mid-size sedan. Regular maintenance, including timely CVT fluid changes, is crucial for ensuring the longevity of these vehicles. The Altima IV 2.5 helped solidify Nissan’s position in the competitive mid-size sedan market and paved the way for future generations of the Altima.
