Every week a Guardian Money reader submits a question, and it's up to you to help him or her out – a selection of the best answers will appear in next Saturday's paper.

This week's question Our medium-sized hatchback is big enough for our family of four for everyday use, but bursts at the seams when we go away. We're considering getting a roof box or even a trailer. Which would you get and why? Any makes we should to buy/avoid? A trailer looks, on paper, the better bet, but I'm concerned we'll have to drive super slowly. Or do we just buy a bigger car?

What are your thoughts?

Every week a Guardian Money reader submits a question, and it's up to you to help him or her out – a selection of the best answers will appear in next Saturday's paper.