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Thule Motion 3 Roof Boxes - Compare Sport, M, L, XL & XXL Sizes
The Thule Motion 3 roof box range provides secure, aerodynamic storage for family trips, outdoor adventures, and everyday driving. Choose from Motion 3 Sport, M, L, XL and XXL sizes to match your car and how much you need to carry — from weekend luggage to skis and bulky camping gear.
Compare up to 4 sizes below using the COMPARE feature.
THULE Motion 3 Size Comparison Chart
Compare all Motion 3 sizes
| Model | Volume | External dimensions (cm) | Best for | Profile / notes |
|---|---|---|---|---|
| Motion 3 Sport | 300L | 188 × 65 × 42 | Compact cars, lighter loads, weekends away | Shortest option; great if you want a smaller footprint |
| Motion 3 M | 400L | 175 × 84 × 44 | Everyday family use, short breaks | Best “all-round compact” choice |
| Motion 3 L | 450L | 194 × 89 × 43 | Longer trips, more luggage than the M | A strong step-up in usable space |
| Motion 3 XL | 500L | 215 × 89 × 43 | Most families, frequent travellers | Most popular “do-it-all” size |
| Motion 3 XL Low | 400L | 216 × 89 × 35 | Drivers wanting a lower height (garages / reduced drag) | Low-profile option; lower height than XL |
| Motion 3 XXL | 600L | 232 x 92 x 45 | Maximum capacity, bulky loads | Largest volume in the range |
| Motion 3 XXL Low | 450L | 232 × 92 × 37 | Longer items + lower height preference | Longest low-profile option |
Tip: If you’re unsure, XL is the safest all-round choice for most families, while XL Low / XXL Low suit customers who want a lower overall height.
Why choose Thule Motion 3?
- PowerClick quick-mount system for fast, secure fitting (no tools needed)
- Dual-sided Ergonomic opening and closing so you can load from either side of the vehicle and close with one hand
- Secure lid locking system SlideLock system automatically locks the lid in place and indicates when the box is securely closed
- Class Leading Aerodynamic design to reduce wind noise and drag compared with older box shapes
- Weather-resistant construction to protect luggage from rain and road spray
- Compatible with modern aero roof bars, making it a great choice for UK vehicles
- Versatile Sizing available in a range of sizes, including new low-profile options.
Which Thule Motion 3 size is right for you?
Most people searching for Motion 3 are comparing M, XL, and XXL. Here’s a simple way to choose:
- Thule Motion 3 M – best for couples, smaller cars, or short trips where you want extra space without a large roof profile. Ideal for soft bags, weekend luggage and everyday use.
- Thule Motion 3 XL – the most popular all-round option. Great for family travel, larger suitcases, and longer breaks, while still maintaining excellent aerodynamics for motorway driving.
- Thule Motion 3 XXL – maximum space for large loads and longer items. Perfect for ski trips, camping gear, pushchairs, and large holiday packing when you need the largest capacity.
Tip: if you’re unsure, XL is usually the safest “do-it-all” choice, while XXL is best if you regularly travel fully loaded or carry bulky equipment.
Fitting, usability & day-to-day practicality
Thule Motion 3 boxes are designed to be easy to live with. The quick-fit mounting makes installation straightforward on most Thule roof bars, while the dual-side opening helps when you’re parked close to a wall or on a busy driveway. Inside the box, integrated fixing points make it easier to secure luggage so it doesn’t shift around on longer journeys.
For many drivers, one of the biggest concerns is motorway noise and fuel economy. While any roof box can increase drag, the Motion 3 range is engineered to be as aerodynamic as possible, reducing wind noise and improving efficiency compared with more boxy designs.
Built for UK roads and year-round use
Whether you’re heading to the coast, the mountains, or just need more boot space for daily life, the Motion 3 range is built for reliable performance. The hard-shell construction is designed to handle everyday wear, and the weather-sealing helps keep your luggage dry in rain and road spray. If you’re upgrading from an older roof box, you’ll notice the refined opening and locking mechanisms and the cleaner, more modern look on the roof.
Browse the full Thule Motion 3 roof box collection below to compare Sport, M, L, XL and XXL models. Each product listing includes detailed dimensions, capacity and fitting information to help you choose the right roof box for your vehicle.
FAQs: Thule Motion 3 Roof Boxes
What’s the difference between Thule Motion 3 XL and XXL?
The main difference is overall capacity and length. XL is the most popular all-round choice for family travel, while XXL offers the maximum space for bulky loads and longer items such as skis.
Will a Thule Motion 3 roof box fit my car?
Motion 3 boxes fit most cars when used with compatible roof bars. Check your vehicle’s roof type and roof bar compatibility, then confirm roof clearance and tailgate opening.
Is the Thule Motion 3 noisy on the motorway?
All roof boxes create some additional wind noise, but Motion 3 is shaped to be aerodynamic, which helps reduce noise and drag compared with older or more boxy designs.
Do I need tools to fit a Motion 3 roof box?
Most setups can be fitted quickly using the integrated quick-mount system (depending on your roof bar type). Always follow the Thule fitting instructions and load limits.