3 Underrated Japanese Sports Cars From the 2000s Worth Buying Now

Posted by THREEPIECE.US on Mar 28th 2026

3 Underrated Japanese Sports Cars From the 2000s Worth Buying Now

While everyone chases 350Zs and S2000s at inflated prices, three genuinely excellent Japanese sports cars from the 2000s remain overlooked. The Toyota Celica GT-S, Acura RSX Type-S, and Mazda RX-8 deliver the goods at half the cost — but not for much longer.

Three underrated Japanese sports cars from 2000s - Toyota Celica GT-S, Acura RSX Type-S, Mazda RX-8

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Toyota Celica GT-S: 2ZZ-GE Screamer

The 2000-2005 Toyota Celica GT-S houses the legendary 2ZZ-GE engine — essentially a motorcycle powerplant that Toyota civilized for street duty. This 1.8L naturally aspirated four-cylinder makes 180 horsepower at 8200rpm with VVTL-i (Toyota's answer to VTEC) kicking in at 6200rpm.

Toyota Celica GT-S with 2ZZ-GE engine bay and aftermarket modifications

The same engine powers the Lotus Elise and Exige, but with Toyota reliability. Rev it to 8200rpm daily without concern — the 2ZZ thrives on abuse. Most came with the sluggish automatic, but manual swaps are $3000 and transform the driving experience completely. Check out our guide on variable timing systems to understand why VVTL-i matters.

For suspension upgrades, the F2 Function & Form Type 2 coilovers share similar geometry and work well on the Celica platform. Browse our vehicle gallery for build inspiration.

Acura RSX Type-S: K20A2 Perfection

The 2002-2006 Acura RSX Type-S represents Honda's K-series at its absolute peak. The K20A2 engine makes 200 horsepower from the factory and responds to bolt-ons better than any other Honda motor. A simple intake, header, and exhaust with Hondata K-Pro tuning unlocks 220+ horsepower naturally aspirated.

Acura RSX Type-S K20A2 engine with performance modifications and aftermarket wheels

The 6-speed manual transmission feels better than anything Honda produces today. Unlike the torque-limited K20A3 in the base RSX, the Type-S K20A2 handles boost well for future turbo builds. Our turbo K20 vs NA VTEC guide explains why the Type-S is the better platform.

Suspension-wise, the RSX responds well to coilovers. The F2 Function & Form Type 2 coilovers are budget-friendly, while serious builds benefit from the Skunk2 lowering springs at $247 for a more conservative drop. Address worn suspension components with the MOOG lower control arm at $94.

Mazda RX-8: Rotary Renaissance

The 2004-2011 Mazda RX-8 houses the 13B-MSP Renesis rotary that revs to 9000rpm and sounds like a Formula car. While the rotary's reliability reputation is overblown with proper maintenance, the chassis is the real star — 50/50 weight distribution and suspension geometry that rivals cars costing $100,000+.

Mazda RX-8 rotary engine bay with performance intake and aftermarket suspension setup

LS swaps are proven and transform the RX-8 into the ultimate sleeper. 400+ horsepower V8 RX-8s exist with proper fabrication, maintaining the car's perfect balance while adding torque. For rotary enthusiasts, the AEM cold air intake in blue at $466 or polished finish at $516 helps the Renesis breathe.

Exhaust upgrades are crucial for rotaries. The Borla cat-back exhaust at $1393 delivers proper rotary sound. For suspension, the Tein Flex Z coilovers at $940 are specifically tuned for the RX-8's unique geometry.

Why These Cars Are Still Undervalued

All three got overshadowed by the 350Z hype train in period. The Z's VQ35DE V6 and 287 horsepower grabbed headlines, but these alternatives offered superior driving dynamics. Clean examples of each remain under $15,000 while 350Z prices have doubled.

Price comparison showing undervalued Japanese sports cars vs inflated 350Z market values

The pattern is clear: enthusiasts follow trends rather than evaluating actual merit. The Celica GT-S offers Lotus Elise DNA with Toyota reliability. The RSX Type-S delivers the best naturally aspirated Honda experience outside an S2000. The RX-8 provides exotic car handling at economy car prices.

Buy now before the internet discovers how good these actually are. Each represents peak Japanese engineering from an era when manufacturers prioritized driver engagement over efficiency mandates. Read our Lexus IS300 buying guide for another overlooked gem from the same period.

These aren't just budget alternatives — they're genuinely great sports cars that deserve more respect. Skip the obvious choices and build something special that won't bankrupt you at purchase. Check our cold air intake guide and mod priority guide before planning your build.