The 2014 Nissan Altima S is a popular mid-size sedan known for its fuel efficiency and reliability. A crucial aspect for prospective buyers is understanding its engine specifications, particularly the engine size. Let's dive deep into the engine details of the 2014 Altima S, covering its size, performance, and other related aspects.

Engine Options for the 2014 Nissan Altima S

The 2014 Nissan Altima S primarily features a 2.5-liter four-cylinder engine. This engine is designed to provide a balance of fuel economy and adequate power for daily driving needs. While some trims of the 2014 Altima might offer a larger V6 engine, the 'S' trim typically comes standard with the 2.5-liter engine. This engine is part of Nissan's QR engine family, known for its durability and efficiency. The 2.5-liter engine in the 2014 Altima S produces around 182 horsepower and 180 lb-ft of torque. This output is generally sufficient for city commuting and highway cruising. It's worth noting that the engine's performance is optimized for regular unleaded gasoline, making it an economical choice for everyday use. The engine also incorporates features like continuously variable valve timing control system (CVTCS), which helps in improving fuel efficiency and reducing emissions. The integration of these technologies ensures that the Altima S delivers a smooth and responsive driving experience while maintaining reasonable fuel consumption. Furthermore, the engine is paired with an Xtronic CVT (Continuously Variable Transmission), which further enhances fuel efficiency by providing a wide range of gear ratios and smooth transitions. This transmission system contributes to the overall driving comfort and efficiency of the 2014 Altima S. The engine and transmission combination makes the Altima S a practical choice for those seeking a reliable and fuel-efficient mid-size sedan. Owners of the 2014 Altima S have generally reported satisfaction with the engine's performance, citing its adequate power for daily driving and its ability to maintain decent fuel economy. Regular maintenance, such as oil changes and filter replacements, is essential to keep the engine running smoothly and to prolong its lifespan. Overall, the 2.5-liter four-cylinder engine in the 2014 Nissan Altima S is a well-engineered and reliable powerplant that offers a good balance of performance and efficiency.

Detailed Specifications of the 2.5-Liter Engine

When we talk about the 2014 Nissan Altima S engine, understanding the detailed specifications of the 2.5-liter engine is essential. This engine has a displacement of 2488 cc, which is often rounded up to 2.5 liters. It features a dual overhead camshaft (DOHC) configuration with four valves per cylinder, totaling 16 valves. This design allows for efficient airflow into and out of the engine, contributing to its performance. The engine's bore and stroke measure 89.0 mm and 100.0 mm, respectively, which gives it a slightly oversquare design. This design characteristic typically favors torque production, making the engine responsive at lower RPMs. The compression ratio of the engine is 10.2:1, which is relatively high and helps in improving thermal efficiency and power output. However, it also requires the use of regular unleaded gasoline to prevent knocking or pinging. The engine's fuel injection system is a multi-point fuel injection (MPFI) system, which ensures precise fuel delivery to each cylinder. This system helps in optimizing combustion and reducing emissions. The engine also features an electronic throttle control system, which provides precise control over the engine's throttle plate. This system improves throttle response and makes the driving experience more enjoyable. In terms of lubrication, the engine uses a wet sump lubrication system, which is a common and reliable design. The oil capacity of the engine is approximately 4.9 quarts (4.6 liters), including the filter. Regular oil changes with the recommended oil type and viscosity are crucial to keep the engine running smoothly and to prevent wear and tear. The engine's cooling system consists of a liquid-cooled radiator and thermostat, which help in maintaining a stable operating temperature. Overheating can cause serious damage to the engine, so it's essential to ensure that the cooling system is functioning properly. Overall, the 2.5-liter engine in the 2014 Nissan Altima S is a well-engineered and reliable powerplant with detailed specifications that contribute to its performance, efficiency, and durability.

Fuel Efficiency of the 2014 Altima S

Fuel efficiency is a significant advantage of the 2014 Nissan Altima S, largely thanks to its 2.5-liter engine and Xtronic CVT. According to EPA estimates, the 2014 Altima S achieves around 27 miles per gallon in the city and 38 miles per gallon on the highway. These figures make it a competitive choice in the mid-size sedan segment. The combined fuel economy is estimated at 31 miles per gallon, making it an economical option for daily commuting and long road trips. Real-world fuel economy can vary depending on driving conditions, driving habits, and vehicle maintenance. However, many owners of the 2014 Altima S report fuel economy figures that are close to the EPA estimates. The Xtronic CVT plays a crucial role in achieving these fuel economy numbers. Unlike traditional automatic transmissions with fixed gear ratios, the CVT can continuously vary the gear ratio to optimize engine speed for maximum efficiency. This results in smoother acceleration and improved fuel economy. The Altima S also incorporates features like low rolling resistance tires and aerodynamic enhancements, which further contribute to its fuel efficiency. The car's lightweight construction also helps in reducing fuel consumption. To maximize fuel efficiency, it's important to maintain the vehicle properly, including regular oil changes, tire inflation, and air filter replacements. Avoiding aggressive driving habits, such as rapid acceleration and hard braking, can also help in improving fuel economy. Using cruise control on the highway can also help in maintaining a consistent speed and reducing fuel consumption. The 2014 Altima S also features an Eco mode, which can be activated to further optimize fuel efficiency. When Eco mode is engaged, the engine's throttle response is reduced, and the transmission shifts earlier, resulting in lower fuel consumption. Overall, the 2014 Nissan Altima S offers impressive fuel efficiency thanks to its efficient engine, advanced transmission, and other fuel-saving technologies. This makes it a practical and economical choice for those seeking a mid-size sedan with low running costs.

Performance and Driving Experience

The 2014 Nissan Altima S delivers a balanced performance and a comfortable driving experience. The 2.5-liter engine provides adequate power for most driving situations, whether it's city commuting or highway cruising. The engine's 182 horsepower and 180 lb-ft of torque provide sufficient acceleration for merging onto the highway and passing other vehicles. The Xtronic CVT contributes to a smooth and seamless driving experience. Unlike traditional automatic transmissions, the CVT doesn't have fixed gear ratios, which means there are no abrupt shifts or jolts during acceleration. This results in a smoother and more refined driving experience. The Altima S also offers responsive steering and handling, making it easy to maneuver in tight spaces and navigate through city streets. The car's suspension is tuned to provide a comfortable ride, absorbing bumps and imperfections in the road. The seats are also well-cushioned and supportive, making long drives more enjoyable. The Altima S is not a sports car, but it offers a competent and confident driving experience. The car's acceleration is adequate for most drivers, and the handling is predictable and stable. The brakes are also responsive and provide good stopping power. The Altima S also features a variety of driver-assist technologies, such as anti-lock brakes (ABS), electronic stability control (ESC), and traction control (TCS), which help in enhancing safety and control. These systems help in preventing skidding and loss of control in slippery conditions. The Altima S also offers good visibility, thanks to its large windows and well-designed mirrors. This makes it easier to see your surroundings and avoid potential hazards. Overall, the 2014 Nissan Altima S offers a balanced performance and a comfortable driving experience, making it a practical and enjoyable choice for daily driving.

Reliability and Maintenance of the 2014 Altima S Engine

When considering the 2014 Nissan Altima S, the reliability and maintenance of its engine are critical factors. The 2.5-liter engine in the Altima S is generally considered to be reliable, but like any engine, it requires regular maintenance to keep it running smoothly. Common maintenance tasks include oil changes, filter replacements, spark plug replacements, and coolant flushes. Following the manufacturer's recommended maintenance schedule is essential to prevent potential problems and prolong the engine's lifespan. Regular oil changes are particularly important, as clean oil helps in lubricating the engine's moving parts and preventing wear and tear. Using the recommended oil type and viscosity is also crucial. The Altima S also requires regular air filter replacements to ensure that the engine receives clean air for combustion. A dirty air filter can restrict airflow and reduce engine performance. Spark plugs should also be replaced at the recommended intervals to ensure proper ignition and combustion. Old or worn spark plugs can cause misfires and reduce fuel economy. The cooling system should also be flushed and refilled with fresh coolant at the recommended intervals to prevent corrosion and overheating. Overheating can cause serious damage to the engine, so it's important to ensure that the cooling system is functioning properly. In terms of potential problems, some owners of the 2014 Altima S have reported issues with the CVT transmission. However, these issues are not widespread, and many owners have not experienced any problems. Regular maintenance, such as fluid changes, can help in preventing CVT issues. Overall, the 2.5-liter engine in the 2014 Nissan Altima S is generally reliable, but regular maintenance is essential to keep it running smoothly and to prevent potential problems. Following the manufacturer's recommended maintenance schedule and addressing any issues promptly can help in prolonging the engine's lifespan and ensuring a trouble-free ownership experience.