4×4 Vehicle Buying Guide

Scott Carline • February 9, 2021

All you need is a single ride in a 4X4 vehicle to understand the appeal of owning one, but if you’re new to the world of off-roading, you’ll need to do some research about the right vehicle for your lifestyle. While Jeeps are a go-to for the adventurous, it’s important to understand that there are plenty of other carmakers who have 4X4s vehicles in their lineups — we want to help you find the perfect fit.

The definition of a 4X4 vehicle is one that has four-wheel drive, where the engine sends equal power to all four wheels at the same time. Different from all-wheel drive, 4X4s offer on-demand modes to help adjust to off-road terrain after highway driving; this is a great feature for drivers who are looking for a versatile vehicle.

However, you should be considering different options if you’re wanting to use your 4X4 for rock climbing, trail riding, or mountain climbing and not highway road trips. Ask yourself this question:
“How do I want to use my 4X4?” The answer will help narrow down your choices and give dealers a better idea of what you’re looking for.

You’re also not limited to new vehicles. If your dream 4X4 is a brand-new model decked out with features, by all means, go for it, but if your budget is limited, you’ll be able to find a used vehicle in good condition. One bonus of going this route: You can mod out your used 4X4 vehicle to become that decked out off-roader of your dreams.

Before jumping into the research and buying process, you’ll need to know which factors matter the most when looking over a 4X4 vehicle.

Engine

This is probably the most crucial place to start. The size and makeup of the engine will determine how well it performs off-road. Take a look at torque and horsepower, if it’s turbocharged, and how many cylinders it has — more means better power but increased maintenance.

Spark Plugs

If you’re buying used, look closely at the spark plugs. Clean, dry, in-tact spark plugs mean that the 4X4 has been maintained and treated well. Steer clear of any residue or damage; that could mean serious problems elsewhere in the vehicle and become a much costlier investment than you had imagined. 

Exhaust

Start up the car and see what smoke comes out if any. If it’s white, that could mean that your 4X4 may have a coolant leak. If it’s black, there’s an issue with the fueling system, and blue smoke shows that the vehicle is burning oil and needs to be inspected further. 

Transmission

If you’ve ever had to replace the transmission in any kind of vehicle, you know how expensive it can be. When you test drive a 4X4, look for any jerking when you shift through gears and noises. Gears should shift easily and quietly.

Brakes and Steering

This is important to check on any vehicle you’re interested in buying, but especially for a 4X4 vehicle you’re thinking of taking on the trails. Sticky, spongy brakes are a problem, as is inconsistent, pulling, or stiff steering. These are sure signs that the 4X4 wasn’t well maintained or properly repaired.

Undercarriage

Either take the 4X4 for a mechanic’s inspection before purchasing or get under the vehicle with a flashlight. Look for cracks and rust; it can spread like wildfire and exist on the car where you can’t see it. Springs, shocks, and bushings also need to be inspected as well.

Mileage and Value

Even if you’re not planning on selling any time soon, a 4X4 is still an investment. High mileage on an off-road vehicle is much different than the same mileage on a highway driver — and it will be higher when you’re done with it. Brand, model, and features will also impact resale value for your 4X4.

Mod-ability

If you’re really interested in taking your 4X4 to the next level, you’ll want to mod it out to fit your needs. You should be able to mod out your new vehicle without having to invest in structural or engine repairs to get the installation right. 

Ready to hit the road in a new-to-you 4X4? Whether you want to drive on rocky terrains, muddy trails, or a paved road, Axleboy is here to transform your vehicle. From a comprehensive consultation to installation, we do it all. Contact us if you’re ready to have your 4X4 customizations done by the most skilled and honest team in town.

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By Scott Carline April 7, 2025
So we're back inside at Axleboy Offroad. We've got our 2020 Jeep Gladiator Sport S. This is still bone stock. I haven't made any modifications to it yet. We have ordered and been receiving a lot of the components from our supplier partner. They're going to end up on this Jeep Gladiator. One thing that's going to be probably the most dramatic cosmetically and performance and everything else from the outside, is the lift kit, and the wheels, and the suspension. Yeah. So right now behind us is bone stock. Let's talk about suspension first. Why don't you tell us what we have here from TeraFlex? Sure. So from TeraFlex, we're doing the adjustable alpine IR arms. IR stands for independent rotation. Now this is a really new product and it's amazing in the fact that it uses the bushing, so we're going to retain the same sound dampening and the same ride quality as we would when we're stock. But the inner sleeve that the bolt actually goes on... Okay. This is actually on a bearing. Okay. And it's a sealed bearing and unlike standard bushings where once the bolt clamps down, it's captive in the rubber and the rubber has to flex in order for this arm to move through its travel. The independent rotation allows free movement, no binding whatsoever, and this is huge in terms of ride quality, in terms of flex when you're off road or when you're on the RTI ramp at a Jeep show, or whatever it may be. We get the best of both worlds. We get the reliability of a good rubber bushing. We get the flexibility of a flex joint, but we don't have the parts that wear out or they get loose and make noise like the flex joints do. So it's kind of the best of both worlds. We expect that these bushings are going to last the vehicle's lifetime. This is a new product, this independent rotation bushing, been in testing and development for quite a while. We expect these to do amazing. What does installing an adjustable control arm do? What's the benefit for me as the Gladiator? Yeah, that's a great question. So we're going to lift it and we're going to raise the suspension. And the way that the geometry works, as we raise, this control arm is going to drop down further away. Now if you notice when this control arm swings down, it moves back. We actually lose some wheelbase when we lift it and it's just the nature of basic geometry. There's nothing we can do about that unless we put in an adjustable control arm. In this case, we can extend the length of this. We can recover our wheelbase, we can recover our alignment angles and our pinion angles as needed. So this gives us the ability to affectively adjust the front axle forward and backward. So we can make sure that the front axle is exactly where we want it. Exactly where we want it with the correct angle and the correct rotation. This is going to make the vehicle drive amazing. We're going to be able to keep caster where we want it, which is important because as we lift it caster drops out. Caster is the alignment angle that gives us stability going down the highway. We can roll it back in. Terrific. What else do we have here from TeraFlex? Well, we also have the new Falcon series three shocks. These are the brand new SP two shocks. Now I know in the past you and I have talked about how nice the Falcon shocks are because we have the quick adjust knobs. So we can turn this knob and we can go from soft ride to firm ride or tow, or if you're particularly picky like I know you are, you can go into setting number two, which gives you micro adjust on the small knob. You can literally dial in the ride as you drive. Now the SP two adds a new feature to it. Okay? It allows us to control the dampening, so this isn't as quick adjust or as easy, but what we can do, if you come in and say, "Dude, I am going to run down a gravel road and I'm going to run this thing hard." You can take the shock off and you can twist it, turn the bottom, and it goes into performance mode. Now this isn't going to be something you're changing in and out of every day. It's something you're probably going to do on install, but it gives you the ability to take the entire shock range and move it to more of a performance setting or to move it more to a comfort setting. Okay. So it just adds one more layer of adjustability to these shocks. These shocks are made up in Utah at the TeraFlex plant in the Falcon plant, handmade up there. Everything is amazing. We've been up on this line. It's the most spotless incredible thing you've ever seen. They've put a lot of time and development into this and these are definitely the best riding shock out there for the JK, and JL, and Gladiators. And it's going to look really cool. Oh yeah. How do you go wrong with all the big, all the billet, all the anodizing, the badging? They cut no corners on this thing at all. So I'm going to guess we've got a front and a back. Yeah. Yeah. So this will be the back. And so the importance with the back is... So it's a gladiator, right? So we're probably going to load it up with stuff, right? I mean, bicycles, kayaks, tent. So we're going to be taking weight in and out of it all the time. And that's really where the quick adjust knob is going to come in for us. So as you add that weight, all your shock dampening needs to change. It's easy now. Reach in there through the wheel-well, make a flip, and go. Going down the road or as a daily driver, what setting would I want to put it on? Well, I'll let you have it as far as a personal preference, but I know when I'm going down the road, just genuinely driving down the highway, I like a softer setting. I don't need to really feel the road. When we go to the firm settings, you're going to feel more input from the road. Now that's going to be great in certain situations. So if you're particularly driving sporty or driving heavy, you're going to want to have that road feel where you can feel the bumps and know what the vehicle is doing. With that, we're going to get a lot of roll control. So the vehicle is going to corner better and it will be able to handle the washboard gravel roads. Because I know like when you're out camping, you're driving down the- Gravel road. Yeah, yeah. You know how it is. You hit the bump and you bounce off the road, not with these, you move it to a firm setting and yeah, it's going to feel like you're zipping across the desert in a Baja race there. So really good stuff. Very adjustable, tunable to how you want it. So typically when you're off road or you're driving in let's say a spirited fashion, if you will, we're going to put them on firm. That's great. Well, thanks a lot to TeraFlex and to Axleboy Offroad. To learn more, you go to teraflex.com or visit us at axleboy.com.
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