What the 2007 Charger's emissions profile tells you

The 2007 Dodge Charger came with three engine options, and each one produced different emissions levels and fuel economy figures. The base model used a 2.7-liter V6 that produced 190 horsepower; the mid-range option was a 3.5-liter V8 with 250 horsepower; and the high-performance R/T model used a 5.7-liter Hemi V8 with 370 horsepower. Your Charger's emissions classification and fuel consumption depend entirely on which engine you own.

All 2007 Chargers met the emissions standards required in the year of manufacture, but they do not meet current EPA standards. If you live in a state that follows California's vehicle emissions rules — which include California, Connecticut, Delaware, Maine, Maryland, Massachusetts, Minnesota, New Jersey, New Mexico, New York, Oregon, Pennsylvania, Rhode Island, Vermont, and Washington — your 2007 Charger may face restrictions on registration or sale depending on your state's specific rules for vehicles of that age.

Key Takeaways

  • The 2007 Charger's emissions output and fuel economy vary significantly based on engine size, with the 2.7L V6 being the most efficient and the 5.7L Hemi V8 being the least.
  • All 2007 Chargers met 2007 EPA standards but do not meet current standards, which may affect registration or resale in states following California emissions rules.
  • The 5.7L Hemi V8 in the R/T model produces higher nitrogen oxide (NOx) emissions than smaller engines, a pollutant that contributes to ground-level ozone.
  • Fuel economy ranged from approximately 17 city / 25 highway miles per gallon for the 2.7L V6 to 16 city / 24 highway for the 5.7L V8.

Engine options and their fuel economy ratings

The 2.7-liter V6 was the most fuel-efficient option available in the 2007 Charger lineup. This engine was paired with a four-speed automatic transmission and delivered approximately 17 miles per gallon in city driving and 25 miles per gallon on the highway. The V6 was the only engine option that came close to meeting the fuel economy expectations of drivers concerned about consumption.

The 3.5-liter V8 occupied the middle ground. It produced 250 horsepower and was paired with a five-speed automatic transmission. This engine achieved roughly 17 city and 24 highway miles per gallon — only marginally worse than the V6 despite the additional displacement and power.

The 5.7-liter Hemi V8 in the R/T model was the thirstiest option. With 370 horsepower and a five-speed automatic transmission, it delivered approximately 16 city and 24 highway miles per gallon. The Hemi's larger displacement meant higher fuel consumption, though Dodge's cylinder deactivation technology helped improve efficiency during highway cruising.

Emissions classifications and pollutants produced

The 2007 Charger was classified as a Tier 2 vehicle under EPA standards that were in effect at the time. Tier 2 standards set limits on several pollutants: nitrogen oxides (NOx), particulate matter, volatile organic compounds (VOCs), and carbon monoxide (CO). The larger the engine, the higher the absolute emissions of these pollutants, though all three engine options met the legal limits for their model year.

Nitrogen oxides are the primary concern for large V8 engines like those in the Charger. NOx contributes to ground-level ozone formation, which degrades air quality and can trigger respiratory problems in sensitive populations. The 5.7L Hemi V8 produced more NOx than the smaller engines, though it still complied with 2007 regulations.

Carbon dioxide (CO2) emissions, which are not regulated under Tier 2 but are tracked separately, correlate directly with fuel consumption. The 2.7L V6 produced the least CO2 per mile driven, while the 5.7L V8 produced the most. Over the lifetime of the vehicle, this difference compounds significantly.

How 2007 standards compare to current EPA requirements

The EPA has tightened emissions standards substantially since 2007. Current Tier 3 standards, which took effect in 2017 and continue to tighten through 2025, require new vehicles to produce roughly 80 percent less NOx than Tier 2 vehicles. Particulate matter limits have also become more stringent, and new vehicles must meet these standards across a wider range of driving conditions.

A 2007 Charger cannot be retrofitted to meet current standards. The engine design, fuel injection system, and emissions control equipment were engineered for 2007 requirements. This gap between old and new standards is why some states restrict the sale or registration of older vehicles, particularly in areas with air quality challenges.

Registration and resale implications in different states

States that follow California's vehicle emissions rules have the authority to set their own standards, which are typically stricter than federal EPA standards. In these states, a 2007 Charger may face registration restrictions or may not be allowed to be sold as a used vehicle, depending on the state's specific rules for vehicles of that age and the current air quality designation of your county.

In states that follow federal EPA standards only, a 2007 Charger can be registered and driven without emissions-related restrictions, though it may still be subject to periodic emissions testing if your state or county requires it. Federal standards do not prohibit the registration of older vehicles; they only set limits for new vehicle production.

When selling a 2007 Charger, the buyer's location matters. If you sell to someone in a California-rule state, they may face restrictions you would not. Disclosure of the vehicle's emissions history and any state-specific limitations is important during the sales process.

Emissions testing and inspection requirements

Whether your 2007 Charger must pass an emissions test depends on your state and county. States that require periodic emissions inspections typically test vehicles for compliance with standards that were in effect when the vehicle was manufactured, not current standards. A 2007 Charger would be tested against 2007 Tier 2 limits, which it should pass if the emissions control systems are functioning properly.

If your Charger fails an emissions test, the most common causes are a faulty oxygen sensor, a malfunctioning catalytic converter, or a problem with the engine control computer. These repairs can range from a few hundred dollars for a sensor replacement to over a thousand dollars for a catalytic converter. Regular maintenance — keeping the engine tuned, replacing the air filter, and addressing check engine lights promptly — reduces the likelihood of failure.

Maintenance to keep emissions systems working

The emissions control systems on a 2007 Charger include the catalytic converter, oxygen sensors, the exhaust gas recirculation (EGR) valve, and the evaporative emissions control system. These components work together to reduce pollutants before they leave the tailpipe and to prevent fuel vapors from escaping into the atmosphere.

Regular oil changes, air filter replacements, and spark plug maintenance help keep the engine running cleanly and reduce strain on emissions equipment. If your check engine light comes on, have the diagnostic code read as soon as possible. Many emissions-related problems are easier and cheaper to fix when caught early. Ignoring a check engine light can lead to catalytic converter damage, which is expensive to repair and will cause an emissions test failure.

Using the correct grade of motor oil and fuel also matters. The 2007 Charger's owner manual specifies the recommended oil viscosity and fuel octane rating for each engine. Using the wrong fuel grade can cause engine knock, which triggers the engine control computer to adjust timing and increase emissions.

Frequently Asked Questions

Will my 2007 Charger pass an emissions test?

If your Charger's emissions control systems are functioning properly and you live in a state that tests against 2007 standards, it should pass. However, if the catalytic converter is damaged, an oxygen sensor is faulty, or the check engine light is on, it will likely fail. Have any warning lights diagnosed before scheduling a test.

Can I drive my 2007 Charger in California?

You can drive it, but you may not be able to register it there or sell it to someone in California without meeting that state's specific rules for older vehicles. California's rules vary by county air quality designation and vehicle age. Check with the California Department of Motor Vehicles or your county's air quality management district for your specific situation.

What is the difference between Tier 2 and Tier 3 emissions standards?

Tier 3 standards, which explore to new vehicles since 2017, are significantly stricter than Tier 2 standards that applied to your 2007 Charger. Tier 3 vehicles produce roughly 80 percent less nitrogen oxide and must meet standards across a wider range of driving conditions. Your Charger cannot be upgraded to meet Tier 3 standards.

How much does it cost to repair a failed emissions component?

Oxygen sensor replacement typically costs between $200 and $400. Catalytic converter replacement is more expensive, ranging from $800 to $2,000 or more depending on the engine and whether you choose an original equipment manufacturer part or an aftermarket alternative. EGR valve repairs usually cost between $300 and $600.

Does my 2007 Charger need an emissions test every year?

That depends on your state and county. Some states require annual testing, others every two years, and some do not require emissions testing at all. Check your state's Department of Motor Vehicles website or contact your local emissions testing facility to learn the testing schedule for your area.