What the Evo X Actually Is
The ninth-gen Lancer Evolution came out in 2007 and stayed in production until 2016, though Japanese domestic sales ended in 2015. Mitsubishi officially retired the nameplate, making the FX generation the final evolution of what started as a homologation special for Group A rallying. The platform shifted to a new unibody architecture that was roughly 10 percent more rigid than the previous CN/CP generation, and Mitsubishi rebranded the all-wheel drive system as S-AWC — Super All Wheel Control. That was essentially a rebranding of the older AYC and ACS systems plus a new active yaw control algorithm tied to the brake-by-wire interface. The engine code is 4B11T. It's a 2.0-liter inline-four with MIVEC variable valve timing on both the intake and exhaust cams, a forged crank and rods, and an intercooled turbocharger. Stock output was 291 horsepower in most markets, though that was the SAE net figure and the actual wheel horsepower was closer to 240-250 on a Dynapack. Torque sat at 300Nm in base form, with the FQ-400 specification pushing around 390 horsepower at the flywheel through reinforced internal components and a higher boost calibration. The gearbox was either a five-speed manual or a six-speed SST dual-clutch automatic, and the SST was controversial even at launch because it was slow to shift and prone to mechatronic unit failures.
The Mitsubishi Evolution X Dissecting The Final Iteration Of A Rallybred Icon
I bought a 2010 GSR with the manual transback in 2013 with 47,000 miles on it. The first thing I learned was that the CVT-style rubber mount on the 4B11T engine actually cracks over time, especially if the car has been driven hard or used for track days. You'll feel it as a sharp clunk on upshifts from a standstill, and it gets worse when the engine is cold. The fix isn't cheap because you need to drop the subframe to get the mount out, but replacement mounts from OEM are significantly better than the originals after about 80,000 miles. The aftermarket options like those from Bisphenix or AEM work fine too if you're doing a full build. One thing most people miss about the S-AWC system is how much it depends on the front wheel speed sensors and the steering angle sensor being properly calibrated. I had a car come into my shop with vague yaw behavior during hard cornering, and the dealership kept swapping the AWC ECU without results. The actual problem was a cracked wire harness going to the front right wheel speed sensor. The system would read inconsistent data and then either disengage AYC or overcompensate with active yaw control, making the car feel nervous at the limit. Took about twenty minutes to trace and repair once we stopped guessing. The differential setup on the Evo X is worth understanding before you start modifying anything. You've got the front LSD, usually a viscous coupling on pre-2012 models and a mechanically actuated clutch type on the later MR and Final Edition cars. The rear uses a multi-plate LSD, and the AYC system at the rear can actively bias torque between the left and right rear wheels by up to 100 percent. This isn't just marketing — you can actually feel the difference when you toggle between different AYC modes. Sport mode gives you the most aggressive rear bias, while Comfort basically deactivates most of the system for daily driving. If you're getting into autocross or track use, Sport mode is where you want to be, and it's something you can change on the fly with the dash selector.
Here's a practical truth about turbocharging these engines: the 4B11T block is strong enough for maybe 450-500 horsepower on stock internals if you're careful. I've seen plenty of cars push past that point and survive, but the forged pistons and rods start showing fatigue around 550 horsepower at the crank under sustained load. The turbocharger is the Mitsubishi MHI unit, and it's decent stock but becomes a bottleneck pretty quickly. A ball-bearing upgrade or a larger aftermarket turbo like a Precision 6266 or Garrett G30-660 will open things up significantly. The wastegate on the stock turbo is internal and prone to sticking, which causes boost overshoot — a common issue when people install a downpipe without adjusting the tune. Brakes are another area where the Evo X has some real weaknesses that nobody talks about enough. The standard GSR setup uses single-piston floating calipers up front, and they fade fast once you get into serious track use. The Brembo package on the MR and FQ variants is noticeably better with two-piston calipers, but even those struggle with pad gas fading on repeated hard stops. I recommend upgrading to high-temperature brake pads like Endless MX72 or Hawk HP+ for any serious driving, and if you're doing multiple track days in a row, a stainless steel braided line kit and larger rotors will help keep things consistent. The stock lines are rubber and they expand under hard braking, which gives you a spongy pedal feel when the system is hot. Suspension geometry on the Evo X uses a MacPherson strut front and a double wishbone rear, which is a good setup overall. The issue is that the original bushings, especially the rear lower control arm bushings, harden and crack over time. This causes vague steering response and makes the car feel less precise during direction changes. I replaced all the rear bushings on my car with polyurethane units from Bilstein, and the difference was immediate. The steering became much more direct, and the car felt more planted during quick transitions. The tradeoff is a slight increase inNVH, but it's worth it if you're driving the car aggressively.
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The SST dual-clutch transmission is the option to avoid if you can. It's not just about the sluggish shift times — the mechatronic control unit that operates the clutches and selectors is a known failure point. Repair or replacement runs roughly $2,500 to $4,000 depending on whether you rebuild or replace the whole assembly. The clutches themselves also wear faster than expected, especially if the car has been driven hard. A properly maintained manual transmission will outlast three SST units, and the driving experience is genuinely better in the manual anyway. You have more control over rev-matching and gear selection, and the shift action on the T6A gearbox is crisp and positive. Electrical gremlins are relatively uncommon on the Evo X compared to some Japanese performance cars of the era, but there are a few known issues. The instrument cluster can develop dimming or flickering lights due to solder joint failures on the main PCB board. It's a fairly straightforward repair if you can desolder and reflow the joints, or you can replace the cluster entirely. The infotainment system in later models is prone to failing after about 100,000 miles, but that's mostly an annoyance rather than a safety concern. I'd also recommend checking the condition of the alternator wiring harness near the firewall — the insulation can chafe against the body and cause intermittent charging issues. If you're looking at buying one, the 2012 facelift model is generally the better choice. Mitsubishi updated the interior materials, added the more refined front fascia, and improved the S-AWC tuning. The 2015-2016 Final Edition is the rarest and most desirable, but it's also the most expensive and some of the special features like theRecaro seats don't offer much practical advantage over the standard sport seats. The mechanical differences between the GSR and the RS are minimal — mainly weight reduction in the RS through deletion of rear seats and sound deadening, plus a stiffer suspension setup. The MR sits somewhere in between with the Brembo brakes and unique tuning.
Maintenance intervals are standard Mitsubishi fare — oil changes every 5,000 miles or six months, spark plugs every 60,000 miles, and coolant flushes every two years. The timing chain on the 4B11T is generally reliable but should be inspected around 100,000 miles for stretch. I've seen a few cases where the chain tensioners weakened and caused noticeable rattle on cold starts. Replacing the tensioners and the chain as a set costs about $800 in parts and two days of labor if you do it yourself, or closer to $1,500 at a shop. It's not a catastrophic failure mode like on some other engines, but ignoring it can lead to timing jump under load. The real value proposition of the Evo X depends entirely on what you're using it for. If you want a daily-driven performance car that can handle twisty roads competently and still be comfortable enough for commute duty, it's one of the best options in its price range. The all-wheel drive system provides confidence in wet conditions, and the manual gearbox makes it engaging without being difficult. If you're building a dedicated track car, the potential is there but the platform has limits — the weight distribution is front-heavy at roughly 60/40, and the unibody chassis doesn't have the same torsional rigidity as a purpose-built race car. For those purposes, a Supra or a BRZ might serve you better. The aftermarket support for the Evo X is extensive because the platform shares so many components with the previous generation. You can find everything from intake systems and exhaust components to complete suspension kits and internal engine upgrades. The key is knowing which modifications actually improve performance versus which ones just change the sound. A cold air intake on a stock Evo X will add maybe 5-8 horsepower at best, and most of that is just making the engine sound louder. A proper downpipe, intercooler upgrade, and ECU tune will move the needle much more, especially if you're targeting the 400-wheel-horsepower range where the car becomes genuinely quick.
Resale values have been interesting. The Evo X held its value well through the early years, and prices for clean examples started climbing after the discontinuation announcement. A well-maintained low-mileage GSR can still command $25,000 to $35,000 depending on condition and market. The Final Edition has gone for significantly more, sometimes $50,000 or above for the best examples. Prices vary heavily by region — the East Coast and Pacific Northwest tend to have higher prices due to demand and weather-related condition concerns. If you're buying, check the rust situation carefully, especially in the wheel wells and underneath the rear bumper. Road salt damage is common on older examples and can affect structural components.
