Introduction
The Mercedes A-Class (W177) AMG-style roof spoiler is one of the simplest exterior upgrades you can make — and one of the most requested. It's a single bolt-on part, but it changes the entire rear roofline of the car, giving the A35/A45-style silhouette without needing the full AMG bodywork.
This guide covers exactly what the part is, what it costs, how it fits, and what to pair it with — based on KITS UK's own fitting of hundreds of these units.
Note: Prices shown are correct at time of publication. Always check the live KITS UK product page at kits.style for current pricing.
- Fits the Mercedes A-Class W177 (A35, A45, and standard A-Class models)
- Price: £249 supply-only, or £359 with professional fitting included
- Finish: high-gloss black, AMG-style profile
- Fitting time: under 30 minutes, no drilling required on most builds
- Designed as a precision 1:1 aftermarket replica for accurate factory-line fitment
Watch the Full Install
Here's our complete fitting walkthrough on a customer's W177 — the same process we follow on every unit that comes through the workshop:
What's Included and What It Costs
| Option | Price | What You Get |
|---|---|---|
| Supply Only | £249 | Spoiler + fitting kit, self-install |
| Supply & Fit | £359 | Spoiler + professional fitting at our workshop |
Prices may change over time — check the live KITS UK product page at kits.style for current pricing.
Why Fit an AMG-Style Roof Spoiler?
The standard A-Class roofline is deliberately understated — Mercedes keeps the AMG-specific spoiler profile as a trim-level differentiator. Fitting the aftermarket version closes that visual gap for a fraction of the cost of an AMG trim upgrade, and it's the single highest-impact change you can make to the rear three-quarter view of the car.
The roof spoiler reads best alongside a rear diffuser or de-chrome package — both change the rear of the car, so fitting them together avoids a "half-done" look where the roofline is upgraded but the bumper isn't.
Fitment: What to Check
| Check | Why it matters |
|---|---|
| W177 generation (2018+) | This spoiler is built specifically for the current A-Class body — not the previous W176 |
| A-Class vs A35 vs A45 | All three share the same roofline, so one part fits all trims |
| Existing rear window wiper | Confirm clearance if your car has a roof-mounted aerial or wiper motor housing |
| Paint match vs gloss black | This version is finished gloss black — factory colour-matching is a separate service |
DIY vs Professional Fitting
Most owners fit this themselves in under 30 minutes with basic tools — it's one of the easiest exterior parts in our entire range. The main steps are cleaning the mounting surface, dry-fitting to check alignment, then bonding using the supplied automotive-grade adhesive tape and any factory clip points.
| Approach | Time | Best For |
|---|---|---|
| DIY (Supply Only) | ~20–30 min | Anyone comfortable cleaning a panel and applying adhesive-backed trim |
| Professional Fitting | Same day | Owners who want a guaranteed factory-line finish with zero risk |
Complete the Look: Related W177 Upgrades
Owners who fit the roof spoiler most commonly pair it with these parts from the same W177 range:
Frequently Asked Questions
Does the roof spoiler fit a standard A-Class, or only A35/A45?
It fits all W177-generation A-Class hatchbacks — standard, A35, and A45 — since they all share the same roofline.
How much does a Mercedes A-Class roof spoiler cost?
£249 supply-only, or £359 including professional fitting at the KITS UK workshop.
Do I need to drill into the roof to fit it?
No — the spoiler bonds using automotive-grade adhesive tape and existing clip points, with no drilling required on most builds.
Will it fit if my car has a roof aerial?
In most cases yes, but check clearance around any roof-mounted aerial or wiper motor housing before ordering.
Is it available in a colour-matched finish?
The standard part is gloss black. Colour-matched painting is available as a separate service — contact KITS UK for a quote.
Final Thoughts
The AMG-style roof spoiler is the easiest, cheapest way to close the visual gap between a standard A-Class and the AMG models — a 20-minute fit that changes the entire rear roofline. Pair it with the diffuser or grille above for a complete rear-and-front refresh.
