Acura
TSX
Lexus
IS
Acura TSX vs Lexus IS: 2021 Comparison
The short answer
The Acura TSX offers fuel economy, while the Lexus IS excels at power instead. Choose the Acura TSX if you prioritize fuel economy in daily driving, or the Lexus IS if power matters more for your needs. Both are covered by real owner reports on CarWizz.
Specs side by side
What owners say
TSX
Overall
Overwhelmingly enthusiastic sentiment for legendary sport sedan regarded as Honda's finest achievement, praised extensively for timeless elegant styling aging gracefully 15-20+ years later, bulletproof K24 engine enabling routine 200,000-300,000+ mile operation (documented examples exceeding 525,000 miles), engaging driving dynamics balancing sportiness and comfort creating "fast go-kart" sensation, perfect compact size filling gap between Civic and Accord, exceptional build quality with vault-like door closing feel (Japan-built VIN "J"), excellent manual transmission option (6-speed creating enthusiast following), affordable maintenance with Honda parts availability, and unique luxury features unavailable in mainstream Honda products. However, criticism includes weak low-end torque requiring high RPM driving (VTEC engagement 6,000 RPM), cramped rear seat legroom, expensive 1st generation parts (steering racks, power steering pumps, alternators not shared with US models), door speaker failures requiring aftermarket replacement, oil consumption issues (2009-2014 models), poor fuel economy versus modern standards (22-25 MPG combined typical), soft Honda paint with clear coat failure, and chronic rocker panel rust (Canada/salt belt climates). Overall consensus: 1st generation 6-speed manual (2004-2008, especially 2007-2008 facelift with upgraded K24A2 engine) represents ultimate driver's TSX achieving cult status, while 2nd generation (2009-2014) offers more refinement and features though less engaging dynamics.
Best version to buy
1st Generation 6-Speed Manual (2007-2008 facelift) The 2007-2008 facelift years with upgraded K24A2 engine (203 hp versus 200 hp pre-facelift), revised cylinder head design adding 5 hp/torque, 6-speed manual transmission, improved interior materials, steering wheel controls, power passenger seat, resolved early production issues (AC condenser, alternator, starter reliability improved) represent ultimate TSX specification. Manual transmission transforms driving experience enabling full engine exploitation and eliminating automatic transmission whining.
Known issues
- ⚠• Door speaker failures, front door speakers blow out creating distorted sound, factory speakers inadequate quality, common 60,000-100,000 miles, aftermarket replacement recommended ($200-$400 Focal Integration or similar), runs off factory…
IS
Overall
Mixed sentiment heavily dependent on generation and powertrain. The IS is widely recognized for its strong long-term reliability, comfortable ride, and luxury feel, particularly when compared to German competitors. However, significant and recurring criticisms are directed at specific mechanical flaws, outdated powertrains, and poor fuel economy.
Best version to buy
IS 350 with the 2GR-FSE V6 engine is the most frequently recommended version for its superior power and reliability over the IS 250. For the third generation (3IS, 2014+), the 2015-2016 model years with the V6 and 6-speed automatic transmission are specifically highlighted to avoid the later UA80 transmission used in 2017+ models.
Known issues
- ⚠Carbon buildup on intake valves (IS 250 with 4GR-FSE engine): causes loss of power, rough idle, poor fuel economy, requires periodic cleaning. Frequency: very frequent.
- ⚠Water pump and front cover oil leaks (2GR-FSE V6 engine): common failure requiring expensive repair (engine removal for front cover, ~20-25 hours labor). Frequency: very frequent.
- ⚠Severe diesel engine issues (IS220d with 2AD-FHV engine): chronic DPF filter and EGR valve clogging leading to very high fuel consumption, potential for catastrophic engine failure (head gasket, seals) especially with poor maintenance.
The verdict
The Lexus IS is the better choice for most buyers.
It has stronger reliability sentiment in owner reports than the Acura TSX, based on the data above. If the specific known issues on the Lexus IS are a dealbreaker, the Acura TSX is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Acura TSX or the Lexus IS?
Owner reports lean more positive on reliability for the Lexus IS than the Acura TSX. See the known issues comparison above for the specific concerns owners report on each.
Which is better for families, the Acura TSX or the Lexus IS?
Data on family-specific factors like cargo space is limited for one or both models, but based on available reports, both are positioned as practical daily drivers. Check the specs table above for seating and body type.
Which has better fuel economy, the Acura TSX or the Lexus IS?
The Acura TSX is more fuel-efficient on paper: 10.2 L/100km combined versus 11.8 L/100km for the Lexus IS, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the Acura TSX or the Lexus IS?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Lexus IS than the Acura TSX. See the known issues comparison above.