Engine and Performance Specs

The 2015 Dodge Charger SRT Hellcat uses a 6.2-liter supercharged V8 engine that produces 707 horsepower and 645 pound-feet of torque. This engine is paired with an 8-speed automatic transmission and rear-wheel drive. The Hellcat can accelerate from 0 to 60 mph in approximately 3.6 seconds and has a top speed of 204 mph, making it one of the fastest four-door sedans available in its model year.

The supercharger is belt-driven and intercooled, meaning it forces more air into the combustion chambers than a naturally aspirated engine would draw. This design allows the engine to produce its extreme power output while still using a standard gasoline fuel type. The transmission is electronically controlled and includes a launch control feature that optimizes acceleration from a standstill.

Fuel Economy and Tank Capacity

The 2015 Charger Hellcat is rated at 12 mpg in city driving, 20 mpg on the highway, and 15 mpg combined by the EPA. These figures reflect the vehicle's high-performance nature and heavy engine load. The fuel tank holds 18.5 gallons, which means highway range on a full tank is roughly 370 miles under ideal conditions.

Real-world fuel consumption varies significantly based on driving habits. Aggressive acceleration and high-speed driving will reduce fuel economy below the EPA estimates. Conversely, steady highway driving at moderate speeds may approach or slightly exceed the 20 mpg highway rating. The supercharger requires premium unleaded gasoline (91 octane minimum, 93 octane recommended) to prevent engine knock and maintain performance specifications.

Emissions and Environmental Classification

The 2015 Charger Hellcat meets EPA Tier 2 Bin 8 emissions standards for its model year. It includes a catalytic converter and particulate filter in its exhaust system to reduce harmful pollutants. The vehicle's CO2 emissions are approximately 510 grams per mile based on its combined fuel economy rating.

This model does not may have access to as a low-emission vehicle (LEV) or ultra-low-emission vehicle (ULEV) under California or federal standards. Some states with stricter air quality regulations may have restrictions on when and where high-performance vehicles like the Hellcat can be driven during air quality alerts. Check your state's environmental regulations if you live in an area with non-attainment status for ozone or particulate matter.

Key Takeaways

  • The 2015 Charger Hellcat produces 707 horsepower from a 6.2-liter supercharged V8 engine and requires premium gasoline.
  • EPA fuel economy ratings are 12 city, 20 highway, and 15 combined, with an 18.5-gallon fuel tank providing approximately 370 miles of highway range.
  • The vehicle meets Tier 2 Bin 8 emissions standards but does not may have access to as a low-emission vehicle under federal or California standards.
  • Real-world fuel consumption depends heavily on driving behavior, with aggressive driving reducing economy significantly below EPA estimates.
  • Some states with air quality concerns may restrict when high-performance vehicles can be driven during pollution alerts.

Comparison to Other 2015 Charger Models

The standard 2015 Charger R/T uses a 5.7-liter naturally aspirated V8 with 370 horsepower and achieves 16 mpg combined fuel economy. The base 2015 Charger SE with a 3.6-liter V6 produces 292 horsepower and reaches 25 mpg combined. The Hellcat's supercharger and larger displacement engine account for the dramatic difference in both power and fuel consumption across the lineup.

Compared to competitors in the high-performance sedan category, the Hellcat's fuel economy is typical for vehicles in its power class. The Chevrolet SS and Cadillac CTS-V from the same era have similar or slightly better combined ratings, though none of these vehicles prioritize fuel efficiency over performance.

Maintenance and Long-Term Fuel Costs

Supercharged engines require more frequent oil changes than naturally aspirated engines because the supercharger generates additional heat and stress on the lubricant. Dodge recommends oil changes every 3,000 to 10,000 miles depending on driving conditions, with synthetic oil required. Premium fuel costs more per gallon than regular unleaded, adding to the vehicle's operating expenses.

The Hellcat's high-performance nature also means brake pads, tires, and suspension components wear faster than on standard vehicles, particularly if driven aggressively. Budget for these consumables when calculating total ownership costs. Repair labor rates for supercharged engines are also typically higher than for standard V8s because technicians need specialized training.

Frequently Asked Questions

Can I use regular gasoline in a 2015 Charger Hellcat?

No. The engine requires premium unleaded gasoline (91 octane minimum, 93 octane recommended). Using regular gasoline will trigger engine knock, reduce power output, and potentially damage the engine over time. Always use the fuel grade specified in your owner's manual.

What is the actual range I can expect on a full tank?

Highway range is approximately 370 miles under ideal conditions, but city driving will reduce this to around 220 miles. Aggressive driving, towing, or mountainous terrain will further reduce range. Plan fuel stops accordingly, especially on longer trips.

Does the 2015 Hellcat may have access to for any environmental incentives or tax credits?

No. Federal tax credits and most state incentives are reserved for electric vehicles, plug-in hybrids, and low-emission vehicles. The Hellcat's high emissions and fuel consumption make it ineligible for these programs.

How does the supercharger affect reliability compared to naturally aspirated engines?

Superchargers add complexity and heat, which can reduce engine lifespan if not properly maintained. Regular oil changes with synthetic oil, premium fuel, and avoiding excessive boost are essential. Many owners report 100,000+ miles without major issues when maintenance is followed.

What states restrict high-performance vehicles during air quality alerts?

California and a few other states with serious air quality problems occasionally restrict driving of high-emission vehicles during ozone alerts. Check your state's environmental agency website for current restrictions. These are typically temporary measures during extreme pollution events.