A8 vs i5
In the midsize luxury car class, the A8 and the i5 are natural rivals. These two are nearly level on the spec sheet, which means the right pick depends more on you than on them.
At a glance
- Engine & Performance A8 wins
- Space & Practicality Tie
- Off-road & Towing Tie
- Engine & Performance3.1
- Engine & Performance1.7
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
-
The A8 has 74 lb-ft more torque
Not a close call. The A8 lists 369 lb-ft and the i5 lists 295 lb-ft. That’s a substantial gap. More torque means stronger pulling from low speeds, which you feel when accelerating from a stop or climbing grades.
Design & Size
Engine & Performance
A8 leads
No contest in engine & performance: the A8 is the stronger of the two. The A8 brings 74 lb-ft more torque. The A8’s extra torque makes it more relaxed when fully loaded or towing. Anyone shopping mainly on engine & performance should start with the A8.
Torque
A8: 369 lb-ft i5: 295 lb-ft Electrified powertrains deliver torque instantly, so compare torque figures alongside the powertrain type.
Space & Practicality
Too close to call
In the space & practicality category, the A8 and the i5 land in almost the same place. Net result on space & practicality: level.
Off-road & Towing
Too close to call
There’s little to choose between them when it comes to off-road & towing. If off-road & towing was going to be your tiebreaker, you’ll need a different one.
Safety & Tech
For safety & tech, the spec sheet lists components and formats rather than figures we can rank. The table shows what the A8 and the i5 each bring.
Full Specifications
Engine & Performance
| Spec | A8 | i5 |
|---|---|---|
| Powertrain | Gas (48V mild hybrid) | Electric |
| Engine | 3.0L turbo V6 | Single rear electric motor |
| Total system output | 335 hp | 335 hp |
| Torque | 369 lb-ft (winner) | 295 lb-ft |
| Transmission | 8-speed automatic | 1-speed direct drive |
| Drivetrain | AWD (quattro) | RWD (xDrive AWD available) |
Fuel Economy & Range
| Spec | A8 | i5 |
|---|---|---|
| Fuel economy (combined)EPA estimate where available | 22 mpg | N/A (not specified) |
| Fuel economy (city) | 20 mpg | N/A (not specified) |
| Fuel economy (highway) | 26 mpg | N/A (not specified) |
| Electric range | N/A (not specified) | 295 mi |
Space & Practicality
| Spec | A8 | i5 |
|---|---|---|
| Seats | 5 seats | 5 seats |
Off-road & Towing
| Spec | A8 | i5 |
|---|---|---|
| AWD / 4WD available | Yes | Yes |
Safety & Tech
| Spec | A8 | i5 |
|---|---|---|
| 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 often drive loaded up or with a trailer (369 lb-ft vs 295 lb-ft of torque)
- you already know your way around Audi’s products
Also Compared
Frequently Asked Questions
Should I buy the A8 or the i5?
On the specs compared here, the A8 makes more sense for most buyers; the i5 doesn’t win a single measurable area.
Executive Summary
If it were just about the brand, you wouldn’t be here. So let’s talk about the A8 and the i5 on their merits. For me, the deciding factor is that only the A8 gives you 74 lb-ft more torque.
If your days lean on engine & performance, I’d pick the A8; if they lean on the things a spec sheet can’t capture, the i5.
My pick: the A8.
Personal opinion based on the data above. Your priorities may differ.