TLX vs CLA
It’s Acura against Mercedes-Benz in the compact luxury car class, and the TLX and the CLA are the models carrying each flag. Neither wins across the board. The TLX makes its case with engine & performance; the CLA makes its case with fuel economy & range.
At a glance
- Engine & Performance TLX wins
- Fuel Economy & Range CLA wins
- Space & Practicality Tie
- Off-road & Towing Tie
- Engine & Performance6.8
- Fuel Economy & Range4.0
- Engine & Performance4.4
- Fuel Economy & Range8.4
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 TLX has 51 hp more power
On this line of the spec sheet, the TLX is in a different league: 272 hp, next to 221 hp for the CLA. The TLX’s extra output gives it more in reserve when you need to get up to speed.
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The CLA has better fuel economy
For fuel economy (combined), the CLA leads by a wide margin: 30 mpg versus 25 mpg. Official figures rarely match real-world driving exactly, but the ranking between two cars tends to hold.
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The CLA has better city fuel economy
This is a headline difference. With 26 mpg to the TLX’s 22 mpg, the CLA has a lead that’s easy to see on paper and in practice. In town, driving style has a big effect, but the CLA starts from a better baseline.
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The CLA has better highway fuel economy
Put simply, the CLA is far ahead here: 36 mpg compared with 31 mpg. The CLA uses less fuel on the highway, a real saving on road trips and long commutes.
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The TLX has 22 lb-ft more torque
On paper, the TLX is a touch ahead here, listing 280 lb-ft against 258 lb-ft. More torque means stronger pulling from low speeds, which you feel when accelerating from a stop or climbing grades.
Design & Size
Dimensions
| Spec | TLX | CLA |
|---|---|---|
| Length | 194.6 in | N/A (not specified) |
| Width (no mirrors) | 75.2 in | N/A (not specified) |
| Height | 56.4 in | N/A (not specified) |
| Wheelbase | 113 in | N/A (not specified) |
Engine & Performance
TLX leads
Here the TLX opens up one of its biggest leads in the comparison. The TLX makes its case with 51 hp more power. More power helps with merging, overtaking and climbing hills, especially with passengers and luggage on board. Anyone shopping mainly on engine & performance should start with the TLX.
Total system output
TLX: 272 hp CLA: 221 hp Power is only part of the story; weight, gearing and torque delivery shape how quick a car feels.
Torque
TLX: 280 lb-ft CLA: 258 lb-ft The TLX’s extra torque makes it more relaxed when fully loaded or towing.
Fuel Economy & Range
CLA leads
For fuel economy & range, the verdict is easy: the CLA leads, and not by a little. The CLA answers with better fuel economy. Better combined fuel economy lowers your running costs every week, and the savings add up over years of ownership. The takeaway: on fuel economy & range, the CLA is the stronger car.
Fuel economy (combined)
TLX: 25 mpg CLA: 30 mpg The CLA uses less fuel on the standard combined cycle, which matters most if you drive a lot.
Fuel economy (city)
TLX: 22 mpg CLA: 26 mpg City fuel economy matters most if your driving is mostly short trips, traffic and stop-and-go commutes.
Space & Practicality
Too close to call
The differences on space & practicality are small enough to ignore in daily use. Don’t let space & practicality decide this one; look at the other sections instead.
Off-road & Towing
Too close to call
There’s no meaningful winner in the off-road & towing section; the two are too close to separate. The off-road & towing verdict: no winner, and no reason to worry either way.
Safety & Tech
The safety & tech entries below are descriptive rather than numeric. Read them side by side to see where the TLX and the CLA part ways.
Full Specifications
Engine & Performance
| Spec | TLX | CLA |
|---|---|---|
| Powertrain | Gas | Gas (48V mild hybrid) |
| Engine | 2.0L turbo I4 | 2.0L turbo I4 |
| Total system output | 272 hp (winner) | 221 hp |
| Torque | 280 lb-ft (winner) | 258 lb-ft |
| Transmission | 10-speed automatic | 8-speed dual-clutch |
| Drivetrain | FWD (SH-AWD available) | FWD (4MATIC AWD available) |
Fuel Economy & Range
| Spec | TLX | CLA |
|---|---|---|
| Fuel economy (combined)EPA estimate where available | 25 mpg | 30 mpg (winner) |
| Fuel economy (city) | 22 mpg | 26 mpg (winner) |
| Fuel economy (highway) | 31 mpg | 36 mpg (winner) |
| Fuel tank | 15.9 gal | N/A (not specified) |
Space & Practicality
| Spec | TLX | CLA |
|---|---|---|
| Seats | 5 seats | 5 seats |
| Cargo (behind rear seats) | 13.5 cu ft | N/A (not specified) |
Off-road & Towing
| Spec | TLX | CLA |
|---|---|---|
| AWD / 4WD available | Yes | Yes |
Safety & Tech
| Spec | TLX | CLA |
|---|---|---|
| Driver-assist suite | AcuraWatch | N/A (not specified) |
| Basic warranty | 4 yr / 50,000 mi | 4 yr / 50,000 mi |
Dimensions
| Spec | TLX | CLA |
|---|---|---|
| Length | 194.6 in | N/A (not specified) |
| Width (no mirrors) | 75.2 in | N/A (not specified) |
| Height | 56.4 in | N/A (not specified) |
| Wheelbase | 113 in | N/A (not specified) |
Price
| Spec | TLX | CLA |
|---|---|---|
| Starting MSRP | $45,400 | N/A (not specified) |
“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 TLX if…
- you want more power (272 hp vs 221 hp)
- you often drive loaded up or with a trailer (280 lb-ft vs 258 lb-ft of torque)
- you prefer staying with Acura
Choose the CLA if…
- you drive a lot and want lower running costs (30 mpg vs 25 mpg combined)
- you want better city fuel economy (26 mpg vs 22 mpg)
- you want better highway fuel economy (36 mpg vs 31 mpg)
Also Compared
Frequently Asked Questions
Should I buy the TLX or the CLA?
The TLX and the CLA split the comparison (engine & performance for the TLX, fuel economy & range for the CLA), so pick the strength you’ll use.
Executive Summary
The TLX versus the CLA is a matchup I find genuinely interesting, because Acura and Mercedes-Benz made different bets. If I had to name one reason, it’s that the TLX brings 51 hp more power. I don’t want to sell the CLA short, though: it has better fuel economy.
If engine & performance is your thing, the TLX fits. If fuel economy & range matters more, the CLA makes more sense.
My pick: the TLX for anyone focused on engine & performance, the CLA for anyone focused on fuel economy & range.
Personal opinion based on the data above. Your priorities may differ.