Source: EPA FuelEconomy.gov & manufacturer data. Figures reflect base trim; actual specs vary by trim level.
About the 2021 Honda Civic Si
The 2021 Honda Civic Si is a sports that earns a Carivo score of 8.2/10 — rated Recommended. Its strongest dimension is Reliability at 8.8/10, while Technology at 7.4/10 is where it trails the competition most noticeably. It's a solid all-rounder that delivers across most dimensions without obvious deal-breakers.
Reliability and safety are the two dimensions that matter most for long-term ownership costs. Reliability stands out at 8.8/10. The Civic Si nameplate has earned that score through its track record and a comparatively clean recall sheet. On safety, it scores 8.5/10 in our assessment. Always confirm the official crash-test results for your exact trim at nhtsa.gov/ratings.
With 7.9/10 for performance, this is a car tuned for daily driving rather than excitement — perfectly capable on the commute, unremarkable on a back road. At 7.4/10 for technology, the infotainment and driver-assist package does its job without setting benchmarks — check which features cost extra on lower trims.
Priced from $27,982–$35,983, 27 MPG, seating 5, the Honda Civic Si sits in the mid-market bracket of the sports segment. Its value score of 8.2/10 confirms that the price reflects the quality — you're getting a lot for your money here. At 5 years old, it's worth checking whether a newer generation or refresh has addressed any weaker dimensions — compare it to the current model year before buying.
Verdict: Nothing about the 2021 Honda Civic Si will scare a sensible buyer off. It scores consistently across the board, and it does what a good sports should — quietly and competently.
Carivo scores are our own editorial assessment, informed by NHTSA safety and recall records, EPA fuel-economy figures, and manufacturer-published specifications. Scores are reviewed periodically and updated when new data becomes available. See our full methodology →
How It Ranks Among Sportss
The 2021 Honda Civic Si ranks #20 of 316 sportss in the Carivo database — better than 94% of the segment. Its 8.2/10 overall score is 0.5 points above the segment average of 7.7/10. Its $27,982 starting price undercuts the segment's median of $46,090 by about 39%.
Varies widely by driver and state — always quote the exact trim before buying
We only print costs we can compute from sourced data (EPA fuel economy, NHTSA recalls). We don't estimate maintenance or depreciation — anyone who gives you one number for those is guessing.
Which Civic Si Year Should You Buy?
Smart-money pick: the 2018 Honda Civic Si scores 8.0/10 — within striking distance of the 2021's 8.2 — and starts roughly $3,000 lower. If you don't need the newest model year, that's money better spent on a higher trim or kept in your pocket.
Proven long-term reliability — lower unplanned repair costs than class average
Top-tier safety scores across crash tests and driver-assistance tech
Good overall value; holds its own against pricier alternatives in the segment
Competent performance that satisfies most everyday driving demands
✗ Where it falls short
Tech suite is functional but lags behind segment-best options; some features cost extra
Brand resale values vary — check current market data before committing
Common Questions — 2021 Honda Civic Si
Is the 2021 Honda Civic Si reliable?
We rate the 2021 Honda Civic Si's reliability 8.8/10 — one of the stronger records in its class.
Is the 2021 Honda Civic Si worth buying?
It scores 8.2/10 overall, ranking #20 of 316 sportss in our database (better than 94% of the segment). A solid choice for most buyers — compare it against the segment leaders before deciding.
How much does the 2021 Honda Civic Si cost?
The 2021 Honda Civic Si starts at $27,982 and ranges up to $35,983 across trims (MSRP when new). At 27 MPG, expect roughly $1,944/year in fuel at 15,000 miles/year.
Which Civic Si years should you avoid?
No standout weak years: across the 9 Civic Si model years we've scored, every year lands within half a point of the best (8.4/10). Pick on price and condition rather than year.
Owner Essentials — Honda Civic Si
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More Honda Reviews
Explore the full lineup of Honda models scored by Carivo — ranked by overall score across reliability, safety, value, performance, and technology.
Representative photo — may show another model year