A8 vs E-Class
The A8 and the E-Class are two different answers to the same midsize luxury car brief, each with its own set of priorities. This is a genuine trade-off. The A8 is stronger when it comes to engine & performance, while the E-Class pulls ahead on fuel economy & range.
At a glance
- Engine & Performance A8 wins
- Fuel Economy & Range E-Class wins
- Space & Practicality Tie
- Off-road & Towing Tie
- Engine & Performance3.1
- Fuel Economy & Range1.3
- Engine & Performance0.6
- Fuel Economy & Range5.0
Spec scores (0 to 10) are calculated from manufacturer specs against other models in the same class. See how the formula works. They are not reviews or user ratings.
Key Differences
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The A8 has 80 hp more power
It’s a lopsided result (335 hp for the A8, 255 hp for the E-Class) and one of the main reasons to choose between them. More power helps with merging, overtaking and climbing hills, especially with passengers and luggage on board.
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The E-Class has better fuel economy
The spread here is large: 28 mpg on the E-Class versus 22 mpg on the A8. Expect to notice it. Better combined fuel economy lowers your running costs every week, and the savings add up over years of ownership.
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The A8 has 74 lb-ft more torque
Of all the specs we compared, this is one where the A8 makes its strongest case: 369 lb-ft against 295 lb-ft. More torque means stronger pulling from low speeds, which you feel when accelerating from a stop or climbing grades.
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The E-Class has better highway fuel economy
The E-Class clearly leads on fuel economy (highway), and 33 mpg versus 26 mpg is a difference that reaches well beyond the spec sheet. The E-Class uses less fuel on the highway, a real saving on road trips and long commutes.
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The E-Class has better city fuel economy
On fuel economy (city), the E-Class posts 25 mpg against 20 mpg for the A8, a gap big enough to feel in everyday use. In town, driving style has a big effect, but the E-Class starts from a better baseline.
Design & Size
Engine & Performance
A8 leads
In this area the A8 has a lead the E-Class can’t close. The A8 pulls ahead with 80 hp more power. The A8’s extra output gives it more in reserve when you need to get up to speed. In short, the A8 is the better-equipped car for engine & performance.
Total system output
A8: 335 hp E-Class: 255 hp Power is only part of the story; weight, gearing and torque delivery shape how quick a car feels.
Torque
A8: 369 lb-ft E-Class: 295 lb-ft The A8’s extra torque makes it more relaxed when fully loaded or towing.
Fuel Economy & Range
E-Class leads
No contest in fuel economy & range: the E-Class is the stronger of the two. The E-Class wins here with better fuel economy. The E-Class uses less fuel on the standard combined cycle, which matters most if you drive a lot. Prioritize fuel economy & range, and the E-Class is where you should land.
Fuel economy (combined)
A8: 22 mpg E-Class: 28 mpg Official figures rarely match real-world driving exactly, but the ranking between two cars tends to hold.
Fuel economy (highway)
A8: 26 mpg E-Class: 33 mpg Highway fuel economy matters if you cover long distances at steady speeds.
Space & Practicality
Too close to call
Evenly matched is the fairest summary of the space & practicality section. The space & practicality verdict: no winner, and no reason to worry either way.
Off-road & Towing
Too close to call
Call the off-road & towing round a draw. On off-road & towing alone, you can’t go far wrong with either.
Safety & Tech
Nothing to tally in the safety & tech section, but plenty to read. The table lists what the A8 and the E-Class each use.
Full Specifications
Engine & Performance
| Spec | A8 | E-Class |
|---|---|---|
| Powertrain | Gas (48V mild hybrid) | Gas (48V mild hybrid) |
| Engine | 3.0L turbo V6 | 2.0L turbo I4 |
| Total system output | 335 hp (winner) | 255 hp |
| Torque | 369 lb-ft (winner) | 295 lb-ft |
| Transmission | 8-speed automatic | 9-speed automatic |
| Drivetrain | AWD (quattro) | RWD (4MATIC AWD available) |
Fuel Economy & Range
| Spec | A8 | E-Class |
|---|---|---|
| Fuel economy (combined)EPA estimate where available | 22 mpg | 28 mpg (winner) |
| Fuel economy (city) | 20 mpg | 25 mpg (winner) |
| Fuel economy (highway) | 26 mpg | 33 mpg (winner) |
Space & Practicality
| Spec | A8 | E-Class |
|---|---|---|
| Seats | 5 seats | 5 seats |
Off-road & Towing
| Spec | A8 | E-Class |
|---|---|---|
| AWD / 4WD available | Yes | Yes |
Safety & Tech
| Spec | A8 | E-Class |
|---|---|---|
| Basic warranty | 4 yr / 50,000 mi | 4 yr / 50,000 mi |
“N/A” means the manufacturer does not specify the value or we could not confirm it. Figures marked “manufacturer rating” are the maker’s own claims, not our measurements.
Which One Should You Buy?
Choose the A8 if…
- you want more power (335 hp vs 255 hp)
- you want more pulling power from low speeds (369 lb-ft vs 295 lb-ft of torque)
- you already use other Audi products
Choose the E-Class if…
- you want better combined fuel economy (28 mpg vs 22 mpg)
- you cover long highway distances (33 mpg vs 26 mpg on the highway)
- you want better city fuel economy (25 mpg vs 20 mpg)
Also Compared
Frequently Asked Questions
Which is better for most people, the A8 or the E-Class?
Neither wins outright. Choose the A8 if engine & performance matters most, or the E-Class if fuel economy & range does.
Executive Summary
I love a proper cross-brand matchup, and the A8 against the E-Class is exactly that. Here’s what matters most to me: the A8 offers 80 hp more power. On the other side, the E-Class brings better fuel economy, and I wouldn’t dismiss that.
I’d steer engine & performance fans toward the A8 and fuel economy & range fans toward the E-Class.
My pick: decide whether you’d miss engine & performance or fuel economy & range more, then buy the A8 or the E-Class accordingly.
Personal opinion based on the data above. Your priorities may differ.