Both the Q4 e-tron and the Cayenne Coupe have standard driver and passenger frontal airbags, front and rear side-impact airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning and available around view monitors.
Compare the2026 Audi Q4 e-tronVS 2025 Porsche Cayenne Coupe
Safety
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Warranty
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Audi pays for scheduled maintenance on the Q4 e-tron for 2 years and 20,000 miles longer than Porsche pays for maintenance for the Cayenne Coupe (3/30,000 vs. 1/10,000).
There are over 51 percent more Audi dealers than there are Porsche dealers, which makes it much easier should you ever need service under the Q4 e-tron’s warranty.
Fuel Economy and Range
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On the EPA test cycle the Q4 e-tron gets better mileage than the Cayenne Coupe running on electricity:
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|
|
|
MPGe |
| Q4 e-tron |
|||
|
|
RWD |
Q4 45 e-tron Electric Motor |
125 city/104 hwy |
|
|
AWD |
Q4 55 e-tron Electric Motors |
107 city/92 hwy |
| Cayenne Coupe |
|||
|
|
AWD |
E-Hybrid Coupe Electric Motor |
53 city/54 hwy |
|
|
|
S E-Hybrid Coupe Electric Motor |
51 city/53 hwy |
|
|
|
Turbo E-Hybrid Coupe Electric Motor |
46 city/48 hwy |
On the EPA test cycle the Q4 e-tron gets better mileage than the Cayenne Coupe running its gasoline engine:
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|
|
|
MPGe |
| Q4 e-tron |
|||
|
|
RWD |
Q4 45 e-tron Electric Motor |
125 city/104 hwy |
|
|
AWD |
Q4 55 e-tron Electric Motors |
107 city/92 hwy |
| Cayenne Coupe |
|||
|
|
|
|
MPG |
|
|
AWD |
E-Hybrid 3.0 turbo V6 |
21 city/23 hwy |
|
|
|
S E-Hybrid 3.0 turbo V6 |
21 city/23 hwy |
|
|
|
3.0 turbo V6 |
17 city/23 hwy |
|
|
|
4.0 turbo V8 Hybrid |
19 city/21 hwy |
|
|
|
GTS 4.0 turbo V8 |
16 city/22 hwy |
|
|
|
S Coupe 4.0 turbo V8 |
15 city/21 hwy |
|
|
|
Turbo GT 4.0 turbo V8 |
15 city/20 hwy |
The Q4 e-tron can travel longer on a full charge than the Cayenne Coupe on electricity, only, on a full charge:
|
|
|
|
Miles |
| Q4 e-tron |
|||
|
|
RWD |
Q4 45 e-tron Electric Motor |
288 miles |
|
|
AWD |
Q4 55 e-tron Electric Motors |
258 miles |
| Cayenne Coupe |
|||
|
|
AWD |
E-Hybrid Coupe Electric Motor |
29 miles |
|
|
|
S E-Hybrid Coupe Electric Motor |
27 miles |
|
|
|
Turbo E-Hybrid Coupe Electric Motor |
24 miles |
Environmental Friendliness
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In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Audi Q4 e-tron higher (10 out of 10) than the Porsche Cayenne Coupe (2 to 4). This means the Q4 e-tron produces up to 40.6 pounds less smog-producing pollutants than the Cayenne Coupe every 15,000 miles.
Brakes and Stopping
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For better stopping power the Q4 e-tron’s standard brake rotors are larger than those on the Cayenne Coupe:
|
|
Q4 e-tron |
Cayenne Coupe |
| Front Rotors |
15 inches |
14.2 inches |
| Rear Drums |
13.9 inches |
13 inches |
Suspension and Handling
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The Q4 e-tron’s front to rear weight distribution is more even (50% to 50%) than the Cayenne Coupe’s (56.8% to 43.2%). This gives the Q4 e-tron more stable handling and braking.
For better maneuverability, the Q4 e-tron 45’s turning circle is 4.5 feet tighter than the Cayenne Turbo GT’s (33.5 feet vs. 38 feet). The Q4 e-tron 55’s turning circle is 2 feet tighter than the Cayenne Coupe’s (37.7 feet vs. 39.7 feet).
Chassis
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The Q4 45 e-tron is 1 foot, 1.5 inches shorter than the Cayenne Turbo GT, making the Q4 e-tron easier to handle, maneuver and park in tight spaces.
The design of the Audi Q4 e-tron amounts to more than styling. The Q4 e-tron offers aerodynamic coefficients of drag from .3 to .31 Cd (depending on bodystyle and options). That is significantly lower than the Cayenne Coupe (.34 to .35) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the Q4 e-tron get better fuel mileage.
Passenger Space
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The Q4 e-tron has .3 inches more front headroom and .1 inches more front legroom than the Cayenne Coupe.
Cargo Capacity
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The Q4 e-tron has a much larger cargo volume than the Cayenne Coupe with its rear seat up (24.8 vs. 20.9 cubic feet).
Ergonomics
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The Q4 e-tron has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The Cayenne Coupe doesn’t offer a remote starting system.
If the windows are left open on the Q4 e-tron the driver can close all of them at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Cayenne Coupe can only operate the windows from inside the vehicle, with the ignition on.
To improve rear visibility by keeping the rear window clear, the Q4 e-tron has a standard rear wiper. The Cayenne Coupe doesn’t offer a rear wiper.
To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the Q4 e-tron has standard extendable sun visors. The Cayenne Coupe doesn’t offer extendable visors.
Model Availability
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The Q4 e-tron is available in both rear-wheel drive and four-wheel drive configurations. The Cayenne Coupe doesn’t offer a two-wheel drive configuration.
Recommendations
© 1999 - 2025Advanta-STAR Automotive Research, all rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America (“Advanta-STAR”). If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it, or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. Removal of this watermark/notification without prior written license and approval received from Advanta-STAR is an agreement, understanding, and/or stipulation by the person(s), entities, agents, attorneys, and any other persons involved in the removal of this watermark/notification (including but not limited to Search Optics, LLC and any and all parent entities, sister entities, and subsidiary entities of Search Optics, LLC and/or any other entity, agent, attorney, and persons related in any manner to Search Optics, LLC) to: 1) an agreed upon amount of liquidated monetary damages of a minimum of $1,250,000.00 US Dollars in favor of Advanta-STAR; 2) the jurisdiction and enforcement of any legal claims associated with this matter asserted by Advanta-STAR in the United States Federal District Court in Portand, Oregon; and 3) service of process of any legal claims asserted by Advanta-STAR associated with this matter may be accomplished by First-Class Postage by the United States Postal Service or comparable service. GPTIB-Z1IP5 2a06:98c0:3600::103 2025/12/26
Consumer Reports® recommends both the Audi Q4 e-tron and the Porsche Cayenne Coupe, based on reliability, safety and performance.