The answer is quite a bit. Here is a picture sent into us from a customer who bought a Modula Wego 500 in White. They bought it before a 6500km road trip throughout the USA.
The customer chose to purchase the smaller and sleeker Wego series over the Travel series because they thought it looked better. Once they returned from their road trip the Wego was better suited to their everyday needs such as trips to the mountains carrying skies, snowboards, boots and poles.
But it looks like the Wego was still up to the task of getting a ton of luggage out of the vehicle while on their road trip. Check out the photo below of all the gear they managed to stuff in throughout their trip!