The Best Mods For The Mercedes A35 AMG

The little brother to the original hyper hatch, the Mercedes AMG A35 blends dynamic performance with luxury, standing out in the hot hatch market with incredible interior tech and great performance. The A35 AMG equipped with a 306 BHP 2.0 turbocharged engine coupled with its 4MATIC all-wheel drive and sharp 7-speed dual-clutch transmission.

The A35 comes from the factory nimble handling and quick acceleration, perfect for both daily commutes and more spirited drives but if you’re looking to make yours better, whether aesthetically or with its performance check out our favourite mods for the A35 below.

Mercedes A35 JB4 Tuning Box

By adjusting the software that controls engine performance, an ECU tuning box can significantly increase horsepower and torque, often improving fuel efficiency as well.

With a tuning box you can get improved performance without installing a permanent modification, this means that not only is it easy to install and get the benefit of improved power, torque and economy but that you can also remove it when you come to sell the vehicle.

• Burger Motorsports JB4 Tuning Box 2020+ Mercedes-Benz A35 AMG, CLA 35 AMG, & GLA 35 AMG £536.73

Air Intake System

Upgrading the air intake can improve engine efficiency and power by allowing more air, and therefore more oxygen, into the combustion chamber. One of the best benefits of adding aftermarket intake to your A35 is the improved induction sound that comes with it.

• Eventuri Mercedes A35 AMG Carbon Fibre Air Intake £1,299.60
• MST Performance Mercedes Benz A35/A250/CLA250 Air Intake Kit £483.55
• Wagner Tuning Mercedes Benz A35 AMG Intake System £429.00

Exhaust System Upgrades

A high-performance exhaust system not only improves exhaust flow, which can increase power, but also gives the car a more aggressive, deeper exhaust note.

Many of our aftermarket exhausts come with different style exhaust tips to give you an even more individual finish, these could include wider tips or even cerakote tips to give you a real darker style.

Please note, the A35 comes in both hatchback and saloon shape, so please ensure you purchase an exhaust that fits your specific bodystyle.

• Cobra Sport Mercedes-AMG A 35 Saloon PPF Delete Exhaust £316.82 Original price was: £316.82.£253.46Current price is: £253.46.
• Cobra Sport Mercedes-AMG A 35 Saloon Venom Cat Back Exhaust £694.90 – £968.65Price range: £694.90 through £968.65
• Milltek Sport Mercedes A35 AMG (W177) Hatch GPF-Back Exhaust £622.06 – £1,026.40Price range: £622.06 through £1,026.40

Looking for a Premium Option?

For those wanting the best in both performance and refinement, the Akrapovič Slip-On Line is the ultimate upgrade. Crafted from lightweight titanium with carbon-fibre tailpipes, it not only enhances power and torque but delivers a sharper, more sophisticated exhaust note. Ideal for A35 owners who want standout quality without compromise.

• Akrapovič Mercedes A35 AMG (W177) AMG Slip-On Line Exhaust System £4,106.92
• Akrapovič Mercedes CLA 35 AMG Slip-On Line Exhaust System £4,352.11

Suspension Upgrades

Lowering the car with sports springs or coilovers improves handling by lowering the center of gravity and reducing body roll making your A35 feel much more planted. Aesthetically, it gives the vehicle a more aggressive stance by reducing the gap between the tires and wheel arches.

• Eibach Mercedes-Benz A-Class/A-Class (W177) Pro-Kit Lowering Springs (15mm) - E10-25-043-06-22 £321.71 Original price was: £321.71.£273.45Current price is: £273.45.

Coilovers That Match the A35’s Performance

If you’re serious about improving how your A35 AMG handles, a quality coilover kit is one of the best investments you can make. Whether you’re chasing more confidence on track or sharper response on the road, BC Racing offers two standout coilover kits for the W177 A35 platform: the RM‑MA and BR‑RA.

Both offer ride height adjustability and 30-way damping control, letting you fine-tune your setup to suit your driving style. But the similarities end there, here’s what sets them apart.

• BC Racing RM MA Coilovers Mercedes A-Class A35 4Matic W177 (18+) 7/7kg.mm £1,239.00

Track-focused. Inverted. Built to take abuse.

• Inverted monotube design improves heat dissipation and damper response under load
• Pillowball top mounts with camber adjustment for precise steering feel
• Designed for track use, hard driving, and repeated high-speed cornering
• Higher price point, but engineered to handle serious abuse

Ideal if you’re regularly on circuit, or just want the sharpest response possible from your chassis setup.

• BC Racing BR RA Coilovers Mercedes A-Class A35 4Matic W177 (18+) 7/7kg.mm £1,049.00

Perfect balance for road and occasional track use.

• Standard monotube damper design with large piston body
• Comfortable enough for daily use, but still performance-ready
• Pillowball top mounts and 30-point damping control included
• More cost-effective without sacrificing adjustability or quality

This setup is perfect for fast road builds or anyone who wants performance gains without giving up too much comfort.

Which One Should You Choose?

• Daily drive with weekend blasts? Go for the BR‑RA
• Track sessions, harder driving, and more feedback? Step up to the RM‑MA

Both kits are fully bolt-on and compatible with the factory suspension layout of the A35. If you’ve already added power or plan to increase grip with upgraded wheels and tyres, pairing those mods with a capable coilover system will unlock the full potential of your setup.

Body kits and modifications

The A35 came in both sleeper guise and also with the aero kit, if you picked up one without the kit and now you’re looking to make it stand out then adding after market aesthetic mods can do just that.