The 2008 Nissan Altima remains a popular choice among used car buyers, appreciated for its reliable performance, stylish design, and solid build quality. For prospective owners or current drivers, understanding the nissan altima 2008 fuel tank capacity is essential when considering fuel efficiency, driving range, and overall vehicle performance. In this detailed article, we’ll explore the fuel tank capacity, fuel economy, trims, and how the Altima stacks up against competitors when it comes to refueling needs.

1. Fuel Tank Capacity of the 2008 Nissan Altima

The Nissan Altima 2008 fuel tank capacity is 20 gallons (approximately 75.7 liters). This capacity applies to both the 2.5L 4-cylinder engine variants and the 3.5L V6 models. The generous tank size allows drivers to travel longer distances without frequent stops at the gas station, a significant advantage for commuters and road-trippers alike.

2. Fuel Efficiency and Driving Range

To better understand what this tank size means for drivers, we must consider fuel economy. The 2008 Nissan Altima came in several trims with two primary engine options:

• 2.5L I4 engine (Altima 2.5 / 2.5 S)

  • EPA-rated: 23 MPG city / 31 MPG highway (CVT)

  • Combined MPG: Approximately 26 MPG

• 3.5L V6 engine (Altima 3.5 SE / 3.5 SL)

  • EPA-rated: 19 MPG city / 26 MPG highway

  • Combined MPG: Approximately 22 MPG

With a 20-gallon tank:

• A 2.5L engine Altima can potentially cover 520 miles on a full tank (26 MPG × 20 gallons).

• A 3.5L engine Altima may cover around 440 miles (22 MPG × 20 gallons).

These ranges offer a respectable balance between power and efficiency, especially for a mid-size sedan of its era.

3. Fuel Type and Recommendations

The 2008 Nissan Altima is designed to run on regular unleaded gasoline, which makes it a cost-effective option in terms of fuel pricing. While the V6 model may benefit slightly in performance from premium fuel, it is not required. This provides flexibility for drivers who want to keep running costs manageable.

Additionally, it’s crucial to always use fuel from reputable sources and avoid low-quality gas, which could potentially impact engine performance and fuel injectors over time.

4. Trim Variants and Impact on Fuel Consumption

Different trims of the 2008 Altima affect fuel economy and by extension, the effective range of the fuel tank:

• 2.5 Base: Basic trim, typically lighter and more fuel-efficient.

• 2.5 S: More features but still uses the 4-cylinder engine.

• 3.5 SE / SL: Higher performance V6 engine models with more weight and slightly reduced fuel economy.

It’s worth noting that the 4-cylinder models will get more mileage out of the 20-gallon tank compared to the V6 trims, due to the differences in power output and fuel consumption.

5. Comparison With Competitors

Let’s look at how the 2008 Nissan Altima’s fuel tank stacks up against some competitors from the same model year:

From the comparison, the Altima leads in both tank size and driving range, especially when paired with the 4-cylinder engine. This makes it ideal for long-distance driving and reduces the frequency of refueling.

6. Fuel Tank Design and Construction

The fuel tank in the 2008 Nissan Altima is crafted from high-density polyethylene (HDPE), which is a common material used in modern fuel tanks due to its resistance to corrosion and durability. The tank is strategically placed under the rear seats to optimize space and maintain a low center of gravity.

The design also incorporates:

• Evaporative Emission Control System (EVAP): To reduce harmful fuel vapors.

• Fuel pump module: Integrated within the tank to improve efficiency and reliability.

• Baffles inside the tank: These prevent fuel sloshing, improving vehicle stability and measurement accuracy.

7. Refueling Tips and Best Practices

To maintain the longevity of your 2008 Altima’s fuel system, consider these refueling tips:

• Don’t Overfill: Stop refueling when the pump clicks to avoid fuel spills and damaging the EVAP system.

• Use Clean Fuel: Regular unleaded from a trusted source helps avoid deposits and clogging.

• Monitor Fuel Levels: Try not to frequently run the tank to empty; it can cause the fuel pump to overheat.

• Regular Maintenance: Replace the fuel filter as recommended and keep the fuel cap tight to avoid emissions leaks.

8. Frequently Asked Questions (FAQs)

Q1: Can I upgrade the fuel tank to a larger size?
Technically, it’s possible, but not practical. Modifying the fuel system can affect emissions compliance and safety. The stock 20-gallon tank provides an excellent balance of weight, capacity, and performance.

Q2: How accurate is the fuel gauge on the 2008 Altima?
The fuel gauge is generally reliable, but some drivers report a delay between actual fuel levels and what the gauge displays, especially when parked on inclines.

Q3: How do I check for fuel leaks or tank damage?
Common signs include fuel odors near the car, visible drips under the rear, or a check engine light. A mechanic can pressure-test the system for leaks.

9. Conclusion: A Well-Balanced Fuel System

The Nissan Altima 2008 fuel tank capacity of 20 gallons is one of its standout features, especially in the mid-size sedan category. It provides an excellent combination of fuel efficiency, range, and driving comfort. Whether you're commuting daily or embarking on long trips, the Altima offers a practical and efficient fuel setup that keeps refueling hassles to a minimum.