There is no single efficiency winner across the V8 configurations listed in the 2024 Fuel Economy Guide. The listed Ford Mustang 5.0L V8 entries range from 17 to 19 mpg combined, while Chevrolet Camaro 6.2L V8 entries range from 16 to 20 mpg combined. Because the guide’s extracted rows do not identify which entries are specifically GT and SS trims or their packages, a fair answer requires matching the exact model year, transmission, trim, wheels and tires, and official fuel-economy label.
For a buyer, the practical result is simple: compare like-for-like automatic or manual cars, then use city, highway, combined MPG and the guide’s annual fuel-cost estimate for that exact configuration.
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What the official numbers show
The principal source is the 2024 Fuel Economy Guide — U.S. Department of Energy and U.S. Environmental Protection Agency, 2024. Its table lists several rows for each V8 engine and transmission family rather than one universal number for an entire model. Those rows produce overlapping results.
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| Model family listed in the guide | Engine | Transmission | City MPG | Highway MPG | Combined MPG | Annual fuel-cost estimate |
|---|---|---|---|---|---|---|
| Camaro configuration 1 | 6.2L V8 | Automatic | 16 | 26 | 20 | $3,450 |
| Camaro configuration 2 | 6.2L V8 | Automatic | 13 | 21 | 16 | $4,300 |
| Camaro configuration 3 | 6.2L V8 | Manual | 16 | 24 | 19 | $3,600 |
| Camaro configuration 4 | 6.2L V8 | Manual | 14 | 20 | 16 | $4,300 |
| Mustang configuration 1 | 5.0L V8 | Automatic | 16 | 24 | 19 | $2,900 |
| Mustang configuration 2 | 5.0L V8 | Automatic | 15 | 24 | 18 | $3,050 |
| Mustang configuration 3 | 5.0L V8 | Manual | 15 | 23 | 18 | $3,050 |
| Mustang configuration 4 | 5.0L V8 | Manual | 14 | 23 | 17 | $3,200 |
These are separate guide rows, not confirmed ratings for every GT or SS package. The Camaro rows span 16–20 mpg combined; the Mustang rows span 17–19 mpg combined. The overlap means the engine displacement alone cannot settle a Mustang GT versus Camaro SS MPG question.
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Camaro SS fuel-economy figures in context
Automatic Camaro rows
One listed 6.2L Camaro automatic configuration achieves 16 mpg city, 26 highway and 20 combined. Another automatic row is rated 13 city, 21 highway and 16 combined. The four-mpg combined spread is substantial for cars sharing the same engine and transmission description in the table. It demonstrates why a buyer should identify the exact vehicle entry rather than apply the best or worst figure to every Camaro SS.
The city ratings differ by three mpg and the highway ratings by five mpg. If your driving is mostly commuting in traffic, the 13- versus 16-mpg city distinction matters more than the combined figure. A driver who spends most miles on open roads should examine the 21- versus 26-mpg highway ratings instead.
Manual Camaro rows
The manual entries are rated at either 19 mpg combined (16 city, 24 highway) or 16 combined (14 city, 20 highway). Again, those figures describe different listed configurations. Choosing a manual transmission does not produce one fixed efficiency result for every 6.2L Camaro.
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Mustang GT fuel-economy figures in context
Automatic Mustang rows
The guide lists one 5.0L Mustang automatic configuration at 16 city, 24 highway and 19 combined. A second automatic row is 15 city, 24 highway and 18 combined. Highway economy is identical in these two rows, while the city rating accounts for the one-mpg combined difference.
Against the Camaro automatic range, the Mustang automatic figures sit in the middle: its 18–19 combined results are higher than the Camaro’s 16-mpg automatic row but lower than the Camaro’s 20-mpg automatic row. That is a configuration comparison, not a definitive GT-versus-SS trim result.
Manual Mustang rows
The manual Mustang entries are rated at 15 city, 23 highway and 18 combined, or 14 city, 23 highway and 17 combined. As with the automatic rows, the highway number remains the same while the city result changes by one mpg.
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Which V8 coupe is more efficient?
Combined MPG comparison
Looking only at the ranges, the Mustang’s listed 17–19 mpg combined results are narrower. The Camaro’s 16–20 range includes both the highest and lowest combined figures in the table. Because the ranges overlap at 17, 18 and 19 mpg, a range endpoint cannot establish a universal winner.
The 20-mpg Camaro row is the strongest combined result shown, while the 16-mpg Camaro rows are the weakest. The Mustang’s best listed result is 19 and its lowest is 17. Those observations are useful for shopping, but they do not identify which row is a GT or an SS package.
Automatic versus automatic
Match transmissions before comparing brands. The Camaro automatic entries run from 16 to 20 mpg combined; the Mustang automatic entries run from 18 to 19. A Camaro automatic can therefore beat either listed Mustang automatic at the top end, while a lower-rated Camaro automatic trails both Mustang automatic rows.
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The Camaro manual rows run from 16 to 19 combined, compared with 17 to 18 for the Mustang manual rows. The ranges overlap almost completely. Comparing one specific manual SS and one specific manual GT requires the official label or a fuel-economy listing that identifies each trim and package.
What the annual fuel-cost estimates mean
The guide publishes an annual fuel-cost estimate beside each MPG row. For the listed Camaro V8 rows, the figures are $3,450, $4,300, $3,600 and $4,300, in the order shown above. The listed Mustang V8 rows show $2,900, $3,050, $3,050 and $3,200.
These are standardized figures from the 2024 guide, not a prediction of an individual owner’s fuel bill. Your result will change with annual mileage, fuel prices, traffic, weather, tire pressure, driving style and time spent using the car’s performance capability. Use the estimates to compare entries within the same guide edition, not as a promise of what a household will spend.
The cost spread also reinforces the configuration issue. The lowest listed Mustang estimate is $2,900, while the lowest listed Camaro estimate is $3,450; however, the rows are not established as a GT-to-SS trim match. A lower cost figure should not be attributed to every Mustang GT, nor should the $4,300 Camaro estimate be applied to every Camaro SS.
Reading the dollar spread correctly
Within the Camaro rows, the listed annual estimates range from $3,450 to $4,300, a $850 spread. Within the Mustang rows, they range from $2,900 to $3,200, a $300 spread. Those arithmetic differences show how much the certified configuration can matter before local fuel prices or personal mileage enter the calculation. They are not promises that one badge will always cost exactly that amount to fuel.
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When two cars have close MPG values, the annual estimate can provide a convenient common-dollar comparison, but it should be read alongside the city and highway ratings. A driver who rarely encounters city traffic may not experience the same advantage implied by a combined figure, and a driver with a short urban commute may see the opposite. The estimate is most useful when both vehicles are evaluated under the same guide edition and the same expected use.
Why city, highway and combined MPG all matter
Mostly urban driving
City MPG captures the stop-and-go conditions that dominate short commutes. In the listed rows, city ratings range from 13 to 16 for the Camaro and from 14 to 16 for the Mustang. If most of your miles are urban, compare the city column first and treat combined MPG as a secondary summary.
Mostly highway driving
The Camaro highway figures range from 20 to 26 mpg, while Mustang rows range from 23 to 24. A Camaro configuration with 26 highway mpg is the highest highway result shown, but another Camaro row is rated at only 20. The Mustang highway values are more consistent in this table, yet the exact Camaro configuration still determines the outcome.
Mixed driving
Combined MPG is a weighted representation intended for a blend of city and highway use. It is useful when your driving pattern resembles the test mix, but it cannot describe every commute. Two cars with the same combined rating can feel different to an owner who drives almost exclusively in one environment.
How to make a fair Mustang GT versus Camaro SS comparison
Use this sequence when evaluating two cars in a dealer listing, window sticker or used-car advertisement:
- Match the model year. Do not treat a 2024 Mustang GT and a 2023 Camaro SS as if they were the same-year pair. The secondary MotorTrend comparison published September 15, 2022 uses that 2024 Mustang GT and 2023 Camaro SS pairing, which provides model-year context but is not the authority for the MPG figures here.
- Match the transmission. Compare automatic with automatic and manual with manual. The guide presents separate rows, and mixing transmissions can create a false advantage.
- Confirm the trim. Verify that the vehicle is the GT or SS you intend to buy. The extracted guide rows identify engine and transmission families but do not establish the exact GT/SS and package mapping.
- Check performance packages and wheels. Record any package, wheel or tire configuration named on the vehicle label or official listing. Different equipment can correspond to different fuel-economy rows.
- Record all three MPG values. Write down city, highway and combined ratings. Select the column that best represents your driving instead of relying on a single headline number.
- Compare annual fuel-cost estimates from one edition. Use the 2024 guide figures together; do not combine a 2024 estimate for one car with a different edition’s estimate for the other.
- Verify the label on the exact car. For a new vehicle, read the window sticker. For a used car, check the vehicle-specific listing at EPA’s Fuel Economy site and compare it with the physical label and VIN-related equipment.
What to record during a test drive or inspection
Write down the model year, body style, engine, transmission, trim, package names, wheel size and tire specification shown on the car. Photograph the window sticker if possible. For a used vehicle, save the EPA listing associated with its equipment and note whether the advertisement has copied a model-level number rather than the vehicle’s certified value. This simple record prevents a high-rated automatic or base-wheel configuration from being mistakenly assigned to a manual car with performance equipment.
How EPA fuel-economy ratings are produced
EPA explains that fuel-economy estimates come from testing at its National Vehicle and Fuel Emissions Laboratory together with test data submitted by manufacturers. The agency describes the process on its Data on Cars Used for Testing Fuel Economy page.
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The estimates are therefore standardized test results, not a guarantee of road performance. Ambient temperature, traffic, speed, acceleration, payload, tire condition and driving habits can move real-world consumption above or below the label value.
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EPA also says manufacturers must revise label MPG values when information shows that the values are too high. That is why checking the current official listing and the vehicle’s own label is preferable to relying on an old advertisement or an uncited internet table.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Model-year caveat for the title
The title names the Mustang GT and Camaro SS without a year, but the available guide is the 2024 edition and the reviewed secondary comparison pairs a 2024 Mustang GT with a 2023 Camaro SS. Fuel-economy ratings are tied to model year and configuration, so the figures in this article should be read as 2024 Guide data for the listed 5.0L Mustang and 6.2L Camaro rows, not as a promise that every year of either nameplate carries the same rating.
If you are shopping a different year, repeat the process with that year’s official EPA entry. A change in transmission, package, wheel and tire size or other certified equipment can place the car in a different row.
Common comparison mistakes
Using the best number for an entire model
Applying the Camaro’s 20-mpg combined result to every SS, or the Mustang’s 19-mpg result to every GT, ignores the multiple rows in the guide. Use the rating tied to the specific vehicle.
Comparing different transmissions
An automatic Camaro and a manual Mustang are not a controlled comparison. Transmission type must be matched before interpreting a brand or engine difference.
Ignoring the driving split
Combined MPG can hide a meaningful city or highway difference. The listed Camaro rows vary from 13 to 16 city and 20 to 26 highway; the Mustang rows vary from 14 to 16 city and 23 to 24 highway.
Treating guide cost as a personal budget
The annual dollar figures are guide estimates for standardized comparison. They do not account for your local fuel price, mileage or driving conditions.
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A specifications comparison can clarify which model years are being discussed, but the official guide and EPA listing should supply the MPG and fuel-cost data.
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Assuming engine size decides efficiency
The 5.0L and 6.2L labels describe displacement, not a guaranteed MPG ranking. The table includes a Camaro row at 20 combined mpg and another at 16, while Mustang rows run from 17 to 19. Transmission, certified equipment and use cycle all matter alongside displacement.
A practical decision rule
Choose the car whose exact, same-year configuration has the better rating in the part of the cycle you actually drive. A highway commuter should prioritize highway MPG; a short-trip urban driver should prioritize city MPG; a mixed-use owner can start with combined MPG and then inspect the city and highway values for trade-offs. When two listings fall within one or two mpg, examine the annual estimate, equipment, condition and price rather than treating the small difference as decisive.
Before signing a purchase order, save the official fuel-economy page or photograph the window sticker. That record preserves the certified city, highway, combined and annual-cost values for the specific vehicle, which is more reliable than a model-level claim.
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Frequently Asked Questions
Which V8 coupe is more efficient, the Mustang GT or Camaro SS?
The 2024 Fuel Economy Guide does not establish one universal winner. Listed Mustang 5.0L V8 rows run from 17 to 19 mpg combined, while listed Camaro 6.2L V8 rows run from 16 to 20. Match the exact year, transmission, trim and equipment before deciding.
What is the Mustang GT’s MPG?
The listed Mustang 5.0L V8 automatic rows are rated at 19 or 18 mpg combined, and the manual rows at 18 or 17 mpg combined. The corresponding city/highway figures are 16/24, 15/24, 15/23 and 14/23.
What is the Camaro SS’s MPG?
The listed Camaro 6.2L V8 automatic rows are rated at 20 or 16 mpg combined, while manual rows are rated at 19 or 16. City ratings run from 13 to 16 and highway ratings from 20 to 26, depending on configuration.
How much does a Mustang GT or Camaro SS cost in gas each year?
The 2024 guide lists annual estimates of $2,900 to $3,200 for the Mustang V8 rows and $3,450 to $4,300 for the Camaro V8 rows. These are standardized comparison figures, not a personal bill; mileage, fuel prices, traffic and driving style change actual spending.
Should I compare automatic and manual MPG separately?
Yes. Compare automatic with automatic and manual with manual. The guide supplies separate rows, and mixing transmissions can create a misleading brand comparison.
Where can I verify the MPG for a specific car?
Check the vehicle’s window sticker and the vehicle-specific entry on EPA’s Fuel Economy site. Confirm the model year, trim, package, wheels and tires, and transmission rather than relying on a generic advertisement.
The Bottom Line
Bottom line: Neither badge wins every comparison. The 2024 Fuel Economy Guide shows Mustang V8 entries at 17–19 mpg combined and Camaro V8 entries at 16–20, with overlapping automatic and manual results. For a defensible Mustang GT versus Camaro SS decision, match model year and transmission, verify trim and equipment on the official label, and judge city, highway and combined MPG against your own driving pattern.
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