Q3 vs XT4
The Q3 and the XT4 are direct rivals in the subcompact luxury suv class, one from Audi and one from Cadillac. It’s a tight one. Few of the gaps between these two are big enough to change how the car fits into your day.
At a glance
- Engine & Performance Tie
- Fuel Economy & Range XT4 wins
- Space & Practicality Tie
- Off-road & Towing Tie
- Engine & Performance5.2
- Fuel Economy & Range3.7
- Engine & Performance5.9
- Fuel Economy & Range4.3
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 XT4 has better city fuel economy
Only a little separates them: 24 mpg on the XT4, 22 mpg on the Q3. City fuel economy matters most if your driving is mostly short trips, traffic and stop-and-go commutes.
Design & Size
Dimensions
| Spec | Q3 | XT4 |
|---|---|---|
| Length | N/A (not specified) | 181.1 in |
| Wheelbase | N/A (not specified) | 109.4 in |
Engine & Performance
Too close to call
Side by side, the engine & performance figures for the Q3 and the XT4 barely differ. If engine & performance was going to be your tiebreaker, you’ll need a different one.
Fuel Economy & Range
XT4 leads
The XT4 squeezes out a win in the fuel economy & range section. The XT4 comes with better city fuel economy. Hybrids often shine in the city, and the XT4 has the better rating here. Bottom line for fuel economy & range: the XT4 has the edge.
Fuel economy (city)
Q3: 22 mpg XT4: 24 mpg In town, driving style has a big effect, but the XT4 starts from a better baseline.
Space & Practicality
Too close to call
Neither the Q3 nor the XT4 has a real advantage in the space & practicality category. Neither car gives you a reason to choose it on space & practicality.
Off-road & Towing
Too close to call
This area ends level; whatever separates these two, it isn’t off-road & towing. Treat off-road & towing as common ground and look elsewhere for the deciding factor.
Safety & Tech
We don’t score this area directly, because the safety & tech specs are labels rather than measurements. The table shows what each lists.
Full Specifications
Engine & Performance
| Spec | Q3 | XT4 |
|---|---|---|
| Powertrain | Gas | Gas |
| Engine | 2.0L turbo I4 | 2.0L turbo I4 |
| Total system output | 228 hp | 235 hp |
| Torque | 251 lb-ft | 258 lb-ft |
| Transmission | 8-speed automatic | 9-speed automatic |
| Drivetrain | AWD (quattro) | FWD (AWD available) |
Fuel Economy & Range
| Spec | Q3 | XT4 |
|---|---|---|
| Fuel economy (combined)EPA estimate where available | 25 mpg | 26 mpg |
| Fuel economy (city) | 22 mpg | 24 mpg (winner) |
| Fuel economy (highway) | 29 mpg | 29 mpg |
Space & Practicality
| Spec | Q3 | XT4 |
|---|---|---|
| Seats | 5 seats | 5 seats |
| Cargo (behind rear seats) | N/A (not specified) | 22.5 cu ft |
| Cargo (seats folded) | N/A (not specified) | 48.9 cu ft Least room, seats folded |
Off-road & Towing
| Spec | Q3 | XT4 |
|---|---|---|
| AWD / 4WD available | Yes | Yes |
Safety & Tech
| Spec | Q3 | XT4 |
|---|---|---|
| Basic warranty | 4 yr / 50,000 mi | 4 yr / 50,000 mi |
Dimensions
| Spec | Q3 | XT4 |
|---|---|---|
| Length | N/A (not specified) | 181.1 in |
| Wheelbase | N/A (not specified) | 109.4 in |
Price
| Spec | Q3 | XT4 |
|---|---|---|
| Starting MSRP | N/A (not specified) | $40,795 Priciest in class |
“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 XT4 if…
- you mostly drive in town (24 mpg vs 22 mpg in the city)
- you’re comfortable with how Cadillac does things
Also Compared
Frequently Asked Questions
Should I buy the Q3 or the XT4?
On the specs compared here, the XT4 makes more sense for most buyers; the Q3 doesn’t win a single measurable area.
Executive Summary
I read both spec sheets (the Q3’s and the XT4’s) so you don’t have to. If I had to name one reason, it’s that the XT4 brings better city fuel economy.
Match the strength to your habits (the things a spec sheet can’t capture for the Q3, fuel economy & range for the XT4), and you won’t go far wrong.
My pick: the XT4.
Personal opinion based on the data above. Your priorities may differ.