The number on the box — 27MHz, 40MHz or 2.4GHz — decides whether two children can race their cars in the same room, how far the car goes before it stops responding, and how often it glitches. It matters more than the colour or the claimed top speed.
| 27MHz | 40MHz | 2.4GHz | |
|---|---|---|---|
| Cars running together | Only one per frequency | Only one per frequency | Dozens — each pairs to its own remote |
| Typical range | 10–20 m | 15–25 m | 30–80 m |
| Interference from Wi-Fi, phones | Rare | Rare | Handled by frequency hopping |
| Antenna | Long telescopic wire | Long telescopic wire | Short or internal |
| Found on | Budget cars under PKR 4,000 | Some budget cars | Almost everything else |
27MHz and 40MHz systems broadcast on one fixed channel. A second car on the same channel hears both remotes and does whatever the stronger signal says. The old workaround was buying one 27MHz car and one 40MHz car so siblings could play together. Some boxes still say 'Car A 27MHz / Car B 40MHz' for exactly this reason — the two-car battle sets at cartoys.pk are built that way.
A 2.4GHz car and its remote 'bind' to each other when switched on and then hop between many channels together. Another 2.4GHz car nearby is simply ignored. That is why you can run five or ten at once at a party. The same band is used by Wi-Fi, but the hopping avoids clashes in practice.
Quoted range is open-air. Indoors, a 2.4GHz car keeps working across a large room and into the next one; a 27MHz car often drops out at the far end of a hallway. Outdoors on a driveway, 2.4GHz gives 30–80 m, enough that the car is out of sight before the signal is.
Not necessarily. A single 27MHz car for a small child playing alone in one room works fine and saves PKR 1,000–2,000. Buy 2.4GHz if there is more than one child, if the car will be used outdoors, or if it costs over PKR 4,000 — at that price there is no reason to accept the older system. If the remote stops pairing, see RC remote not working.
Yes. Each 2.4GHz car binds to its own transmitter and hops channels, so any number can run together without interfering. Two 27MHz cars cannot — they need to be on different frequencies.
2.4GHz in every practical way: longer range, no interference between cars, shorter antenna. 27MHz is only worth choosing when the car is under PKR 4,000 and will be used alone.
Not noticeably. The car's transmitter uses frequency hopping and very low power. Wi-Fi may slightly reduce the car's range in a crowded flat, but it will not knock either off.
The large majority are 2.4GHz. A small number of budget cars under PKR 4,000 use 27MHz, and the two-car battle sets pair a 27MHz car with a 40MHz car so both can run together. Each product page lists it.