A mileage limit on a warranty/guarantee is normally an upper mileage limit within a time period. For example 3 years OR 90,000 miles, whichever comes first. It would end at 3 years even if the mileage was much less.
It could have the remainder of Honda 3 year manufacturers warranty, or the remainder of Hondas 5 year extended warranty, (available to buy at an additional cost or sometimes given as a freebie as a sales incentive). Or whatever period the used car warranty given by the dealership. You might be able to negotiate an even longer period with the dealership as part of the deal.
If its 3 years old it must be a mk 4 and a hybrid. If you ended the test early because you were concerned the High Voltage battery indicator was only showing say 2 or 3 bars (out of 10) you have missed the point of a hybrid. The engine would have restarted automatically while you were on the test drive to charge it up again. This gauge quite often only shows 2 or 3 bars , especially in cold weather, and doesn't often go above 7 bars.
If its the cars display that shows a worryingly small remaining range in miles (or km) it means someone (you or the dealer) needs to put some more petrol in the tank. Nothing to do with bars on the HV battery gauge.
Incidentally I was once given a civic as a courtesy car during a service. The petrol tank was almost empty. I put 5 litres in to cover the mileage I chose to do that day. This was too little to register any change on the remaining range. I returned to the dealership with 0 miles range remaining, although I knew there was still at least 'my' 5 litres left in the tank. (enough for 60 more miles)
I can understand not wanting to drive an unfamiliar, and in some ways very different, car for the first time in heavy traffic. But once you get used to them the mk4 excels in city and other stop/start traffic.