The 2021 Porsche Cayenne delivers an EPA-certified 17–20 MPG combined across 12 configurations. Estimated annual fuel costs range from $3,600 to $4,450.
Factual efficiency differences across gasoline, hybrid, plug-in hybrid, and electric variants
Annual Fuel Cost: $3,800–$4,450.
Gasoline Combined: 21 MPG • Annual Cost: $3,600.
Laboratory certification test values across engine, transmission, and drivetrain permutations
| Configuration / Model | Powertrain | Drivetrain | Transmission | City | Highway | Combined | EV Range | Annual Fuel Cost | CO2 (g/mi) |
|---|---|---|---|---|---|---|---|---|---|
| Cayenne e-Hybrid Premium and Electricity | 3L Plug-in Hybrid | All-Wheel Drive | Automatic (S8) | 45 MPGe (20 MPG) | 48 MPGe (22 MPG) | 46 MPGe (21 MPG) | 17 mi | $3,600 | — |
| Cayenne e-Hybrid Coupe Premium and Electricity | 3L Plug-in Hybrid | All-Wheel Drive | Automatic (S8) | 45 MPGe (20 MPG) | 48 MPGe (22 MPG) | 46 MPGe (21 MPG) | 17 mi | $3,600 | — |
| Cayenne Premium | 3L 6-Cyl Gas | All-Wheel Drive | Automatic (S8) | 19 MPG | 23 MPG | 20 MPG | — | $3,800 | — |
| Cayenne Coupe Premium | 3L 6-Cyl Gas | All-Wheel Drive | Automatic (S8) | 19 MPG | 23 MPG | 20 MPG | — | $3,800 | — |
| Cayenne S Premium | 2.9L 6-Cyl Gas | All-Wheel Drive | Automatic (S8) | 18 MPG | 22 MPG | 20 MPG | — | $3,800 | — |
| Cayenne S Coupe Premium | 2.9L 6-Cyl Gas | All-Wheel Drive | Automatic (S8) | 18 MPG | 22 MPG | 19 MPG | — | $4,000 | — |
| Cayenne Turbo S e-Hybrid Premium and Electricity | 4L Plug-in Hybrid | All-Wheel Drive | Automatic (S8) | 40 MPGe (17 MPG) | 44 MPGe (20 MPG) | 42 MPGe (18 MPG) | 15 mi | $4,200 | — |
| Cayenne Turbo S e-Hybrid Coupe Premium and Electricity | 4L Plug-in Hybrid | All-Wheel Drive | Automatic (S8) | 40 MPGe (17 MPG) | 44 MPGe (20 MPG) | 42 MPGe (18 MPG) | 15 mi | $4,200 | — |
| Cayenne GTS Premium | 4L 8-Cyl Gas | All-Wheel Drive | Automatic (S8) | 15 MPG | 19 MPG | 17 MPG | — | $4,450 | — |
| Cayenne GTS Coupe Premium | 4L 8-Cyl Gas | All-Wheel Drive | Automatic (S8) | 15 MPG | 19 MPG | 17 MPG | — | $4,450 | — |
| Cayenne Turbo Premium | 4L 8-Cyl Gas | All-Wheel Drive | Automatic (S8) | 15 MPG | 19 MPG | 17 MPG | — | $4,450 | — |
| Cayenne Turbo Coupe Premium | 4L 8-Cyl Gas | All-Wheel Drive | Automatic (S8) | 15 MPG | 19 MPG | 17 MPG | — | $4,450 | — |
Standardized annual energy consumption and operating cost metrics based on 15,000 annual miles
Based on $3.50 per gallon regular gasoline
Estimated annual energy units needed for 15,000 miles
Compared to the average new vehicle over 5 years
Cross-reference safety ratings, owner defect complaints, and recall campaigns
Vehicle summary, specifications, and primary KPI metrics.
NHTSA 5-Star NCAP crash tests, rollover risk, and active driver assistance.
NHTSA consumer defect complaint filings by affected component.
Official safety recall notices, defects, and free repair instructions.
Direct, deterministic answers synthesized from verified United States government databases for the 2021 Porsche Cayenne
The 2021 Porsche Cayenne achieves an EPA-certified rating of 17 to 20 MPG combined across 12 certified configuration(s).
City ratings range from 15 to 20 MPG, and highway ratings range from 17 to 23 MPG.
The 2021 Porsche Cayenne plug-in hybrid (PHEV) delivers up to 0 miles of all-electric driving range before transitioning to hybrid gasoline operation.
In electric mode, efficiency is rated at 21 MPGe, switching to 0 MPG combined on gasoline.
Using AutoUtility's standardized operating cost model, estimated annual fueling and energy costs range between $3,600 and $4,450 for the 2021 Porsche Cayenne.
Calculated under AutoUtility's standardized methodology (15,000 miles per year, 55% city / 45% highway driving, $3.50/gallon regular gasoline, $0.16/kWh electricity) using official EPA dynamometer consumption ratings.
Fuel economy ratings, electric range figures, and energy cost estimates on this page are retrieved directly from the United States Environmental Protection Agency (EPA) and U.S. Department of Energy (FuelEconomy.gov) certified vehicle database under 40 CFR Part 600.
Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.