The 2017 Mercedes-AMG GLA 45 stands out as a compact luxury crossover that punches far above its weight, delivering supercar-like acceleration in a practical package. Updated with enhanced power outputs and aerodynamic tweaks, this model elevates the hot SUV segment, offering blistering speed alongside Mercedes’ signature refinement.
Engine Power and Performance Metrics
At the heart of the 2017 GLA 45 lies a handcrafted 2.0-liter turbocharged four-cylinder engine, producing 376 horsepower and 350 lb ft of torque. This compact powerplant achieves an astonishing 188 bhp per liter, surpassing even high-end supercars like the Ferrari 488 GTB. Paired with a seven-speed dual-clutch transmission and Mercedes’ 4MATIC all-wheel-drive system, it propels the vehicle from 0-62 mph in 4.4 seconds, a 0.4-second improvement over its predecessor, though slightly behind the A45 and CLA45 siblings at 4.2 seconds.
Mercedes claims a top speed of 155 mph, extendable to 168 mph with the optional AMG Driver’s Package. Fuel efficiency is surprisingly respectable at 38.2 mpg combined, with CO2 emissions at 172 g/km, balancing performance with efficiency. The transmission features shortened ratios in the top five gears for sharper responses and quicker shifts, especially in Sport+ mode, where aggressive exhaust notes enhance the driving thrill.
| Performance Spec | Details |
|---|---|
| 0-62 mph | 4.4 seconds |
| Top Speed | 155 mph (168 mph optional) |
| Power | 376 bhp / 350 lb ft |
| Fuel Economy | 38.2 mpg combined |
Chassis Dynamics and Driving Experience
The GLA 45’s chassis shines with exceptional grip from its 4MATIC system and wide tires, providing confidence-inspiring traction in wet or dry conditions. Steering is precise and well-weighted, mimicking a hot hatch’s agility despite the SUV stance. Adaptive dampers in the Dynamic Plus package allow mode adjustments from Comfort to Race, though the ride remains firm, particularly on 20-inch wheels.
Handling feels lithe on twisty roads, with minimal body roll and strong braking, but the stiff suspension transmits road imperfections harshly, even in softer settings. This trade-off prioritizes track-day prowess over long-haul comfort, making it less ideal for rough urban streets. The brake pedal, while powerful, can feel overly sensitive, requiring adaptation.
- Grip and Traction: All-wheel drive ensures planted cornering.
- Steering Feedback: Accurate and communicative for spirited drives.
- Ride Quality: Firm; best on smooth pavement.
Design and Aerodynamic Enhancements
Facelifted for 2017, the GLA 45 features aggressive styling with new front splitters, revised grilles, LED headlights, rear diffusers, and a prominent spoiler, all reducing drag for better high-speed stability. Flared wheel arches and quad exhausts accentuate its muscular profile, available in eye-catching editions like Yellow Night.
Wheel options range from 19-inch standards to 20-inch alloys, paired with performance rubber. Interior updates include DINAMICA microsuede accents, a revised steering wheel, and carbon-fiber trims, blending sportiness with luxury.
Interior Comfort and Practicality
Cabin space is adequate upfront with supportive sport seats, but rear headroom suffers, especially with the panoramic sunroof. Cargo capacity is modest for an SUV, prioritizing performance over family hauling. The high-mounted infotainment screen is readable, and the column-shift frees console space. Standard kit includes LED lights, sunroof, parking aids, and a reversing camera.
Options like Recaro seats, adaptive suspension, and Aerodynamics packages enhance appeal. Materials feel premium, with aluminum, wood, or carbon accents.
Technology and Safety Features
The GLA 45 boasts a comprehensive suite: full infotainment, xenon/LED lights, and advanced driver aids. The AMG Dynamic Plus adds Race mode and a limited-slip differential for sharper dynamics. Safety tech mirrors the GLA lineup, with strong crash ratings implied by Mercedes’ standards.
Ownership Costs and Rivals
Priced at a premium, the GLA 45 competes with Audi SQ5, BMW X2 M35i, and Volvo XC40 Recharge. Its unique power density sets it apart, but firmer ride and tighter space may sway buyers to hatchbacks like the A45. Running costs benefit from efficiency claims, though real-world figures vary.
| Rival | 0-60 mph | Power |
|---|---|---|
| Audi SQ5 | 4.7s | 349 bhp |
| BMW X2 M35i | 4.5s | 302 bhp |
| Mercedes A45 | 4.2s | 376 bhp |
Pros and Cons at a Glance
- Pros: Explosive acceleration, superb grip, premium build, efficient for power.
- Cons: Firm ride, limited rear space, high price.
FAQ
Is the 2017 GLA 45 faster than its predecessor?
Yes, it shaves 0.4 seconds off the 0-62 mph time, now at 4.4 seconds.
How does the ride quality hold up daily?
Firm and composed on highways but harsh over bumps; opt for adaptive dampers.
What’s the fuel economy like?
Official 38.2 mpg combined, realistic mid-30s in mixed driving.
Is it practical for families?
Limited rear and cargo space make it better for couples or solo drivers.
Can it match hot hatches?
Performance rivals the A45, but SUV height slightly dulls agility.
In summary, the 2017 Mercedes-AMG GLA 45 excels as an entertaining daily driver for performance enthusiasts, blending raw power, advanced tech, and luxury in a compact footprint. Its firm dynamics demand smooth roads but reward with unmatched thrills.
References
- 2017 Mercedes-AMG GLA45 review – Does the hot crossover sacrifice its dynamics for — Evo. 2017-04-10. https://www.evo.co.uk/mercedes/gla/19198/2017-mercedes-amg-gla45-review-does-the-hot-crossover-sacrifice-its-dynamics-for
- 2017 Mercedes-AMG GLA45 Yellow Night review — Car Keys. 2017. https://www.carkeys.co.uk/car-reviews/2017-mercedes-amg-gla45-yellow-night-review
- 2017 Mercedes-AMG CLA45 4MATIC and 2018 GLA45 4MATIC — Car and Driver. 2017. https://www.caranddriver.com/reviews/a15095213/2017-mercedes-amg-cla45-and-2018-gla45-first-drive-review/
- 2017 Mercedes-Benz GLA-Class Review & Ratings — Edmunds. 2017. https://www.edmunds.com/mercedes-benz/gla-class/2017/review/

