Scale on an RC car is a size ratio against a real vehicle, and - same as with model kits - a bigger bottom number means a smaller car, not a bigger one. 1/18 is a small, easy-to-store car; 1/8 is a large, heavy one; 1/10 sits in the middle and ends up the practical sweet spot for most first-time buyers in NZ. If you've read our model kit scales guide, this is the same underlying idea applied to RC - just with a narrower, more practical set of options to choose between.
What does scale mean on an RC car?
Scale is the real vehicle's size divided by the number after the slash. A 1/10 car is one-tenth the length of the full-size vehicle it's modelled on; a 1/8 car is one-eighth. Because you're dividing by a smaller number, 1/8 cars come out larger than 1/10 cars, which come out larger again than 1/18 cars - the opposite of what the numbers suggest at a glance until it clicks.
Unlike model kits, where scale is mostly about display size and detail level, RC scale has real functional consequences: it drives motor size, battery format, tyre size, ground clearance and how much a car weighs - all of which shape how the car handles and drives, not just how big it looks sitting on a shelf.
The common scales at a glance
Three scales cover almost the whole beginner market, and each one has settled into a fairly distinct role rather than existing as a pure size variant of the others. Reading the table below alongside the sections that follow should make it obvious which one fits your situation, without needing to compare individual models side by side:
| Scale | Typical size | Best for |
|---|---|---|
| 1/18 | Small, fits on a shelf or in a car boot easily | Tight storage, younger drivers, casual driveway use |
| 1/10 | Medium - the RC industry's default size | Most first-time buyers - parts, batteries and choice all peak here |
| 1/8 | Large, heavy, a serious step up | Experienced owners wanting maximum power and scale presence |
What scale is best for beginners?
1/10 is the beginner sweet spot, and it's not a close call. It's the scale with the deepest range of models, the widest spares support, and the most forgiving balance of power, size and weight for someone still learning to drive. The Traxxas Slash 4X4 VXL we recommend in our beginner guide sits at 1/10 for exactly this reason - it's the scale the whole hobby is built around.
That popularity isn't an accident. 1/10 hit a sweet spot decades ago between big enough to be durable and stable, and small enough to be affordable and transportable - and the entire aftermarket industry (tyres, upgrade parts, spare bodies) grew up around that scale as a result. Choosing 1/10 as a beginner means choosing the scale with the least friction everywhere else in the hobby, not just at the point of purchase.
When smaller scales make sense
1/18 cars earn their place for specific situations rather than as a general first choice: limited storage space, a younger or smaller-handed driver, or wanting something that lives in the car boot for spontaneous park visits. The Traxxas LaTrax Teton is a good example of what a well-built 1/18 monster truck looks like - genuinely capable for its size, just working with a smaller footprint and a lighter overall build than a 1/10 truck.
The trade-off worth knowing before choosing 1/18 as a first car: the smaller the scale, the smaller and more scattered the spares and upgrade market tends to be. That's rarely a problem for casual use, but it's worth knowing if you think you might want to upgrade or repair extensively down the track.
When to go 1/8 or bigger
1/8 scale is a step up in every dimension: bigger motors, bigger batteries, heavier chassis, and a real step up in running cost and storage space required. It suits drivers who already know they want maximum power and scale presence, not a first car - the Maverick QuantumR FLUX shows what a 1/8 platform looks like once you're past the beginner stage: substantial, serious, and built for owners who know exactly what they're getting into.
Weight matters more at 1/8 than at any other scale covered here. A 1/8 car is heavy enough that a hard collision with a person, pet or parked object is a real consideration in a way it simply isn't at 1/10 or 1/18 - worth factoring in if you're thinking about where and around whom you'll be driving.
Does scale affect parts and batteries?
Yes, significantly. Parts, tyres and batteries are scale-specific, and 1/10 has by far the deepest spares and upgrade support simply because it's the most popular scale - a real question we get asked is what 1/10 chassis can fit 200mm bodies and come with a full radio system, and the answer is that Tamiya's TT-02 platform and Traxxas's 4-Tec both fit that description, with the Traxxas offering the bigger step up in outright performance if you want it. 1/8 and 1/18 both work fine long-term, but expect a narrower range of options at the shelf and online compared with 1/10.
Battery format follows the same logic. 1/10 cars have settled on a small number of common battery shapes that fit almost anything in that scale, while 1/8 cars typically run larger packs suited to their bigger motors, and 1/18 cars often use more compact, specific-fit batteries. None of this is a reason to avoid 1/8 or 1/18 - it's simply something to budget mental space for, the same way you'd budget storage space for a bigger car.
FAQs
Do scales match between brands?
Not perfectly, and that's a real source of confusion - we get asked fairly often whether a specific model, like the Traxxas E-Revo, is 1/8 or 1/10 scale, and the honest answer is that it depends who you ask: the chassis is often marketed as 1/10 while the wheels and overall footprint sit closer to 1/8 scale sizing. Treat the scale number as a strong guide rather than an exact promise, and check a model's dimensions if precise size matters to you. This is exactly the kind of detail worth checking on the specific product page rather than assuming from the headline scale alone.
Is a bigger RC car faster?
Not automatically - power-to-weight ratio matters more than sheer size. A well-built 1/10 with a strong brushless system can out-accelerate a heavier 1/8 running a weaker setup, so scale is a rough guide to size and durability, not a guarantee of speed. Bigger scales do tend to carry bigger motors and batteries on average, which is where the "bigger is faster" assumption comes from, but it's a tendency, not a rule. If outright speed is the goal regardless of scale, look at the drivetrain and battery spec first, and treat the scale number as a distant second consideration.
Are small RC cars good for indoors?
1/18 cars are the most realistic indoor option of the three, provided the space is clear of breakables and the surface has decent grip - carpet and smooth flooring both work, though carpet will feel slower and use more battery for the same distance. 1/10 and 1/8 cars are generally too large, powerful and heavy for safe indoor use outside of a large, open garage or hall. A large, empty garage or hall is the realistic middle ground for the bigger scales if driving indoors matters to you.
Ready to pick a scale? Browse our RC Cars (On & Off Road) range, or start with Best Beginner RC Cars in NZ for our overall pick. Questions? Message Us or visit us in Auckland.