Large RC Cars for Adults: 1/8, 1/5 and Beyond, and What They Take
Large RC cars for adults start at 1/8 scale (about 50–65 cm long) and go up to 1/5 scale models of around 90–100 cm and 10–40 kg. Popular choices are 1/8 and 1/6 electric bashers on 6S–8S LiPo, 1/5 gas buggies and trucks like the HPI Baja 5T (about 12.6 kg), and giant monster trucks like the 1/5 Raminator (around 80 lb). Bigger cars handle rough ground better, look impressive and run for a long time on gas, but they cost more, need space and can be dangerous.
By Kyle HilsonUpdated: October 20263 min read
Size classes
| Class | Typical length | Power | Example |
|---|---|---|---|
| 1/8 | 50–65 cm | 6S electric or nitro | Buggies, truggies, monster trucks |
| 1/6 and 1/7 | 60–90 cm | 6S–8S electric | Large bashers, speed cars |
| 1/5 | 80–100 cm | 23–36 cc gas or 8S+ electric | HPI Baja 5T (900 mm, 12.6 kg) |
| Giant monsters | about 1 m | 49 cc gas | 1/5 Raminator (~80 lb) |
Typical values; the Baja 5T and Raminator figures are from their makers.
Why go big
Large cars roll over grass, gravel and bumps that stop smaller cars. They’re stable at speed, durable when built with heavy-duty parts, and gas versions run for 30 minutes or more on a tank. The size and sound draw attention wherever you drive. For many adults, a large car is the most satisfying way to enjoy RC outdoors.
What it costs
Expect much higher prices than for 1/10 cars, plus big batteries or fuel, chargers, and more expensive parts. A crash that would break a cheap arm on a 1/10 car can bend a costly part on a 1/5. Used 1/5 cars are common and can be good value with careful inspection. More detail on the biggest class is in 1/5 scale RC cars.
Practical needs
- Space: large fields, gravel areas or tracks; backyards are usually too small.
- Transport: estate car, pickup or van.
- Noise: gas engines are loud; check rules and neighbours.
- Storage: stands keep tyres round and the car off the floor.
- Help: heavy cars are awkward to carry alone.
Safety
- Drive well away from people, pets and traffic.
- Check the failsafe and engine kill switch before every run.
- Handle large LiPo packs carefully; charge in fireproof bags.
- Store fuel safely.
- Remember that a 10–40 kg car at speed can cause serious injury.
Choosing
- Electric for simplicity and quiet; gas for long runs and engine sound.
- Parts availability in your country.
- Monster trucks for bashing; buggies for speed and handling.
- Your space and transport.
- Budget for batteries, chargers and spares.
The biggest monster truck example is described in Raminator RC truck.
Electric or gas at large scale
Large electric cars are quieter, start instantly and need less maintenance, but their batteries are heavy and expensive, and run time is limited by how many packs you own. Gas cars run for half an hour or more per tank, refuel in seconds and have a real engine sound, but they need engine care: air filters, fuel mix, spark plugs and occasional carburettor tuning. Many adults choose gas for big open spaces and electric where noise matters. Both are fun; the right choice depends on where you’ll drive and how much tinkering you enjoy.
FAQ
What is the biggest RC car for adults?
1/5 scale cars and giant trucks around 1 m long are the largest common models.
Gas or electric for a big RC car?
Electric for easy running; gas for long run times.
How heavy are 1/5 RC cars?
Often 10–15 kg; giant trucks much more.
Do I need a big space?
Yes, large cars need open areas.
More on this topic: the complete RC Cars guide covers the basics behind this article.
About 20 years in RC. Mostly boats in the NAVIGA Mini Eco Expert class, with many self-made parts; also a King Motor Baja 5B, a home-built electric plane, home-built nitro planes he has flown, and an RC helicopter. More about SwellRC
