Is The Ford Focus Rs All Wheel Drive – How The Advanced Torque

The third-generation Ford Focus RS features a sophisticated “Ford Performance” All-Wheel Drive (AWD) system designed by GKN. Unlike traditional setups, it uses dual-clutch packs at the rear to provide dynamic torque vectoring and a dedicated Drift Mode for enhanced performance.

You want a car that offers more than just straight-line speed; you want something that carves corners with surgical precision. If you are researching high-performance hatchbacks, you have likely asked is the ford focus rs all wheel drive to understand its legendary grip. We all agree that power is useless if you cannot put it down on the pavement effectively.

I promise to break down the mechanics of this complex drivetrain so you can maintain it or buy one with total confidence. In this guide, we will preview the GKN Twinster system, common maintenance requirements, and how to troubleshoot the Rear Drive Unit (RDU). Whether you are a weekend track warrior or a DIY enthusiast, this deep dive covers everything you need to know.

By the end of this article, you will understand exactly how the Focus RS manages its power and why it remains a benchmark in the automotive world. Let’s get under the chassis and look at the hardware that makes this car special.

Everything You Need to Know: Is the Ford Focus RS All Wheel Drive?

To answer the primary question clearly: yes, the third-generation (Mk3) Ford Focus RS, produced between 2016 and 2018, is equipped with a permanent All-Wheel Drive system. However, it is important to note that earlier generations of the Focus RS (the Mk1 and Mk2) were strictly front-wheel drive vehicles. The introduction of the AWD system in the Mk3 model was a massive shift for the brand.

The system found in the Mk3 is not your average commuter car setup designed for snow and rain. Instead, Ford collaborated with GKN Automotive to implement the Twinster system. This technology allows the car to distribute power not just between the front and rear axles, but also between the individual rear wheels.

When people ask is the ford focus rs all wheel drive, they are usually looking for performance capabilities. This system can send up to 70% of the engine’s torque to the rear axle. From there, it can direct 100% of that available rear torque to either the left or right wheel, creating a yaw effect that rotates the car into a corner.

The Evolution of the RS Drivetrain

The decision to go AWD was driven by the 2.3L EcoBoost engine’s output, which produces 350 horsepower and 350 lb-ft of torque. Putting that much power through the front wheels alone would have resulted in massive torque steer and limited traction. By moving to an intelligent AWD platform, Ford transformed the Focus from a fast commuter into a legitimate track weapon.

This transition put the Focus RS in direct competition with the Subaru WRX STI and the Volkswagen Golf R. While those competitors use more traditional center differentials or Haldex systems, the Focus RS went a more aggressive route with its clutch-based torque vectoring. This makes it feel much more rear-biased than its rivals in certain driving modes.

How the Ford Performance AWD System Works

The magic of the Focus RS lies in its Power Transfer Unit (PTU) and the Rear Drive Unit (RDU). The PTU is located at the front of the car, attached to the transmission. Its job is to take power from the front differential and send it down a propshaft to the rear of the vehicle.

Unlike a traditional AWD car, there is no heavy center differential in the middle of the chassis. This saves weight and allows for faster response times. The system is “always on,” but it uses a suite of sensors to monitor steering angle, lateral G-forces, and wheel speed 100 times per second.

The RDU contains two electronically controlled clutch packs. These clutches replace a traditional rear differential. When the car’s computer detects that you are entering a turn, it can “overdrive” the outside rear wheel. This pushes the nose of the car toward the apex, virtually eliminating understeer.

Understanding the PTU and Propshaft

The PTU is a critical component that DIYers should monitor closely. It sits in a high-heat environment near the turbocharger and downpipe. Because it holds a relatively small amount of gear oil, it can be prone to overheating during extended track sessions or aggressive canyon driving.

The propshaft is a two-piece design that features a center support bearing. If you ever feel a vibration coming from the center of the car under acceleration, it is often a sign that the propshaft or its carrier bearing is beginning to fail. Regular inspections of these mechanical links are vital for long-term reliability.

The GKN Twinster Rear Drive Unit (RDU) Explained

The GKN Twinster RDU is the heart of the Focus RS handling experience. As an expert who has serviced these units, I can tell you they are marvels of engineering. Instead of using gears to allow for different wheel speeds during turns, the RDU uses its clutch packs to slip or engage as needed.

This design allows the car to achieve “torque vectoring by design.” When you accelerate out of a corner, the RDU engages the clutch for the outside wheel more firmly. This creates a pivot point that helps the car rotate. It is a proactive system, meaning it reacts to your inputs before the car even begins to slide.

However, because this system relies on friction clutches, it generates heat. Ford equipped the RDU with an internal temperature sensor. If the unit gets too hot, the car will temporarily disable the AWD system to protect the clutches, reverting the car to front-wheel drive until it cools down.

RDU Cooling and Thermal Management

For those who take their Focus RS to the track, heat management is the biggest challenge. Some owners install aftermarket RDU air scoops or cooling fins to help dissipate heat. If you see a “Drive Mode Not Available” message on your dashboard, it is often the RDU thermal protection kicking in.

It is also worth noting that the RDU does not have a traditional drain plug in some early versions, making fluid changes a bit tricky. Using a high-quality 75W-85 or 75W-90 synthetic gear oil is essential. Always ensure you are using the specific fluid weight recommended by Ford Performance to maintain clutch engagement consistency.

Driving Modes and the Famous “Drift Mode”

The AWD system is controlled through four distinct driving modes: Normal, Sport, Track, and Drift. Each mode changes how the RDU distributes torque. In Normal mode, the car prioritizes stability and efficiency. In Sport mode, the steering gets heavier, and the AWD system becomes more rear-biased.

Track mode is designed for maximum grip and the fastest possible lap times. It stiffens the dampers and sets the AWD system to provide the most balanced power delivery. This mode ensures that the car stays neutral through high-speed sweepers, allowing the Michelin Pilot Sport Cup 2 tires to do their job.

Then there is Drift Mode. When you select this, the RDU sends as much torque as possible to the outside rear wheel while softening the dampers. This helps the car break traction in a controlled manner. It is a unique feature that really highlights why the question is the ford focus rs all wheel drive is so central to its identity.

How Drift Mode Actually Functions

Contrary to popular belief, Drift Mode does not turn the car into a pure rear-wheel-drive vehicle. The front wheels are still pulling, but the RDU is working overtime to push the rear end out. The stability control system also adjusts to allow for a certain amount of slip before intervening.

If you plan to use Drift Mode, be prepared for accelerated tire wear. The system puts immense stress on the rear clutch packs and the outer edges of your tires. Always perform these maneuvers in a safe, closed-course environment and check your differential fluid levels afterward if you do it frequently.

Maintenance and Common Problems for Focus RS AWD

Maintaining a performance AWD system requires more diligence than a standard hatchback. One of the most common issues owners face is PTU seal leaks. If you notice a dark, oily spot on your driveway near the front axle, you should inspect the PTU immediately. A dry PTU will fail quickly and is expensive to replace.

Another area to watch is the RDU fluid. Ford initially claimed this was a “fill-for-life” unit, but most enthusiasts and technicians recommend changing the fluid every 30,000 miles. If you track the car, you should change it even more frequently. Fresh fluid ensures the clutch packs engage smoothly without shuddering.

You should also be aware of the “Drive Mode Not Available” error. While this can be caused by the RDU overheating, it can also be triggered by a faulty exhaust valve actuator. The Focus RS has an active exhaust valve that must open and close for certain drive modes to function. If the valve sticks, the AWD computer may limit your mode selection.

DIY Maintenance Tips

• Check PTU Seals: Look for “weeping” around the axle seals during every oil change.
• Fluid Extraction: Use a high-quality fluid suction pump to remove old oil from the RDU, as many units lack a dedicated drain plug.
• Tire Rotation: Because the RS is rear-biased in many modes, rear tires can wear faster than expected. Rotate them every 5,000 miles to maintain even tread.
• Software Updates: Ensure your car has the latest PCM (Powertrain Control Module) updates from the dealer, as Ford released several tweaks to the AWD logic.

Performance Upgrades for the Focus RS Drivetrain

Once you are comfortable with the factory setup, you might want to enhance the AWD performance. One of the most popular mods is a mountune or Whiteline pitch mount. This reduces engine and transmission movement, which helps the AWD system transfer power to the ground more directly during hard shifts.

Another upgrade to consider is a front Limited Slip Differential (LSD). While the rear has torque vectoring clutches, the front uses an open differential that relies on brake-based torque vectoring (pinching the brakes on the spinning wheel). Installing a mechanical Quaife or Wavetrac LSD in the front can significantly improve turn-in grip.

For those pushing high horsepower (over 400 whp), upgraded half-shafts and a heavy-duty propshaft are wise investments. The factory components are robust, but extreme torque can eventually cause the CV joints to fail under high-load launches.

The Importance of Suspension Tuning

The AWD system works in tandem with the suspension. Upgrading to adjustable coilovers can help you fine-tune the weight transfer of the car. By controlling how the body rolls, you allow the AWD system to keep the tires flatter on the pavement, maximizing the contact patch during aggressive cornering.

Many owners also swap out the factory “forged” wheels for lighter aftermarket options. Reducing unsprung weight makes the AWD system’s job easier, as there is less rotational mass for the clutches to accelerate and decelerate. This results in snappier throttle response and better braking performance.

Frequently Asked Questions About is the Ford Focus RS All Wheel Drive

Does the Ford Focus RS have a center differential?

No, the Focus RS does not use a traditional center differential. It uses a Power Transfer Unit (PTU) at the front and a Rear Drive Unit (RDU) with two clutch packs at the back to manage torque distribution between the axles.

Can you turn off the All-Wheel Drive in a Focus RS?

You cannot manually disable the AWD system to make the car purely front-wheel drive or rear-wheel drive. However, the system may automatically revert to FWD if it detects excessive heat in the RDU to protect the mechanical components.

Is the Focus RS AWD system good in the snow?

Yes, the Focus RS is excellent in the snow when equipped with proper winter tires. The intelligent AWD system provides great traction, though the low ground clearance means you should be careful in deep drifts to avoid damaging the front splitter.

How often should I change the AWD fluids?

For a street-driven car, changing the PTU and RDU fluids every 30,000 to 50,000 miles is recommended. If you participate in track days or autocross, you should consider changing these fluids every 10,000 miles or once per season.

Is the Ford Focus RS All Wheel Drive system reliable?

Overall, the system is very reliable if maintained properly. The most common issues are minor PTU leaks and thermal shutdowns during extreme track use. Regular fluid checks and keeping the underside of the car clean will prevent most major failures.

Final Thoughts on the Focus RS AWD System

The Ford Focus RS is a masterclass in how modern technology can transform a humble hatchback into a performance icon. When you ask is the ford focus rs all wheel drive, you aren’t just asking about a drivetrain; you’re asking about a system that defines the car’s soul. The GKN Twinster setup provides a level of engagement that is rare in modern vehicles.

By understanding the roles of the PTU and RDU, you can better appreciate the engineering that goes into every corner you take. Remember to stay on top of your fluid intervals and keep an eye out for any leaks. A well-maintained RS is a reliable partner for both daily commutes and weekend adventures.

If you are looking to buy one, ensure the previous owner has documented their drivetrain maintenance. The Focus RS is a robust machine, but it rewards those who treat it with care. Get out there, enjoy the grip, and stay safe on the roads!