The biggest RC cars commonly available are 1/5-scale models, with the Primal RC Raminator Monster Truck V4 measuring about 40 inches long.
If you’re wondering what the biggest RC car is, the answer depends on whether you mean the largest production hobby vehicle or a one-off custom build. For most enthusiasts, 1/5-scale trucks and buggies mark the top of the hobby market, and a few specific models stand out for their sheer size. Finding the biggest radio controlled car that fits your budget and space takes some comparison, and the table below shows how the leading candidates stack up.
What Scale Defines the Biggest RC Cars?
Scale designations like 1/5 or 1/6 describe the ratio to a full-size vehicle, but the printed number alone doesn’t tell you how large a model actually is. Wheelbase, width, and body dimensions matter far more than the scale number on the box.
Horizon Hobby, a leading RC distributor, states that large RC trucks, buggies, and cars are usually 1/5 to 1/6 scale and can measure up to about three feet long.
Which Production RC Car Is the Largest?
That puts it a clear step ahead of other large-format trucks:
- Losi 5IVE-T 2.0: A 1/5-scale short course truck that Horizon Hobby says is “massive” at over 3 feet long — 38 inches to be exact, on a 24-inch wheelbase.
- Traxxas X-Maxx: A widely popular large electric truck at 30.67 inches long, 22.26 inches wide, and 13.79 inches tall. Some secondary sources call it the biggest RC car, though its dimensions trail the Raminator and the 5IVE-T.
The Raminator’s extra length and monster-truck stance make it the largest of these production models. If you’re ready to see which large-scale option suits your driving style and budget, our roundup of the biggest radio controlled car picks breaks down the best models for different needs.
Beyond Production Models: Full-Size Custom Builds
Some sources stretch the definition of “RC car” to include full-size remote-controlled vehicles built as engineering projects rather than hobby products.
These builds are not comparable to production hobby RCs. They are one-off contraptions, not something you can buy and run at a local track. For the practical question of what you can purchase, 1/5-scale production trucks remain the largest category.
| Model | Scale | Dimensions |
|---|---|---|
| Primal Raminator V4 | 1/5 | 40 in long, 24 in high |
| Losi 5IVE-T 2.0 | 1/5 | 38 in long, 24 in wheelbase |
| Traxxas X-Maxx | 1/5 | 30.67 in long, 22.26 in wide, 13.79 in tall |
What to Know Before Buying a Large-Scale RC
Large gas-powered trucks like the Redcat Rampage MT V3 run on unleaded gasoline mixed with 2-stroke oil, plus air filter oil, and AA batteries for the transmitter. That adds fuel handling and maintenance to the equation — these are powerful machines meant for large open spaces, not backyards.
Electric 1/5-scale trucks like the X-Maxx avoid fuel but still need big open areas to be enjoyable. Regardless of power type, compare length, width, height, and wheelbase across models rather than trusting the scale number alone, since body shells and tire sizes change the final dimensions.
References & Sources
- Horizon Hobby. “What Is the Biggest RC Car?” Discusses 1/5-scale sizing and the Losi 5IVE-T 2.0’s 38-inch length.
- Losi. “Large-Scale RC Cars and Trucks.” Explains the 1/5 to 1/6 scale band for large-format vehicles.
- Primal RC. “Raminator Monster Truck V4.” Official product page listing 40-inch length and 24-inch height for the biggest scale RC car.