A Mars bar's weight has varied over time, with the largest size being 65g in the 1990s. It's currently around 51g, similar to its size in the 1980s.
The Mars bar has undergone several size changes throughout its history. Therefore, pinpointing a single "used to weigh" figure is impossible without specifying a time period. However, the information suggests:
- Largest recorded size: 65g (1990s)
- Current size (similar to the 1980s): 51g
Therefore, depending on when you're asking about, a Mars bar "used to weigh" different amounts.
