2018 Infiniti Q50 First Drive

Muscle cars run on a simple formula: big power, small price. Japan never quite matched that formula until Infiniti’s 2018 Q50 Red Sport 400 showed up with 400 horsepower, four doors, and a price tag tens of thousands below what a GT-R or RC F demands. First-drive reviewers loved the power but split hard on one specific detail. Here’s what stood out.

In America, muscle cars are fast, affordable and almost always powered by a V8 engine. There are no direct equivalents in Japan, but the Nissan GT-R and Lexus RC F are close. The problem is neither is very affordable, so unless you’re willing to pay for the privilege, you either have to settle for something less expensive or less powerful.

There is a middle ground, however, and the 2018Â Infiniti Q50Â is a perfect example. Nicer than traditional muscle cars such as the Camaro or Mustang â€” and with four doors, more practical, too â€” the Q50 adheres to a basic tenet of muscle-car philosophy: a lot of power for a little money.

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American muscle cars have always followed a simple formula: a lot of power for not a lot of money. Japan never really built a direct equivalent, and the closest options, the Nissan GT-R and Lexus RC F, both cost far more than that formula usually allows. So where does that leave someone who wants Camaro-or-Mustang levels of thrust without settling for a two-door coupe and a stripped-down interior? Infiniti thinks it has the answer, and the first drives of the updated 2018 Q50 suggest the case is more compelling than the badge alone would imply, even if reviewers didn’t agree on every detail.

Muscle Car Math, Applied To A Sedan

The 2018 Q50 Red Sport 400 pairs a 3.0-liter twin-turbo V6 with 400 horsepower, sent to the rear wheels in the configuration most reviewers tested through the twisty roads around Nashville during the first drive event. Pricing ranges from roughly $34,200 for the base PURE trim up to $51,995 for the Red Sport 400, with a well-optioned test car landing just over $59,000, positioning the Q50 well below what a GT-R or RC F would cost for similar power; a comparably equipped GT-R starts tens of thousands of dollars higher, while the RC F carries its own premium despite offering less usable interior space. Fuel economy lands at an EPA-rated 20 mpg city and 26 mpg highway, essentially unchanged from the 2017 model, and the four-door layout adds a practicality that traditional two-door muscle cars simply can’t match.

Where The First-Drive Reviews Actually Split

For 2018, Infiniti sharpened the exterior with a more aggressive front clip and a cleaner rear, refreshed the interior with new ambient lighting and a redesigned shifter, and offered two dealer-installed exhaust options for buyers who want the Red Sport 400 to sound as aggressive as its power figures suggest. Where the first-drive reviews genuinely diverged was the steering: Infiniti’s Direct Adaptive Steering, a fully electronic setup with no mechanical connection to the front wheels, struck some reviewers as sharp and appropriately weighted, while others described it as numb and disconnected from what the front tires were actually doing. That split verdict is worth keeping in mind for anyone cross-shopping the Q50 against more traditional rear-drive performance sedans.

How the Red Sport 400 Stacks Up on Paper

Against direct rivals like the BMW M3 and the Cadillac ATS-V, the Q50 Red Sport 400’s twin-turbo V6 gives up some outright track-focused sharpness but undercuts both on price while matching or beating their horsepower figures, a value proposition that first-drive reviewers consistently flagged as the car’s strongest argument. It’s a sedan built to win on the spec sheet and the price tag rather than lap times alone.

The Tech Infiniti Packed In for 2018

The refreshed Q50 lineup added Infiniti’s ProPilot Assist semi-autonomous driving system as an available option, combining adaptive cruise control with lane-keeping assistance for reduced-fatigue highway driving, a feature aimed squarely at buyers cross-shopping more tech-forward German rivals. It represented one of the more significant technology additions to the Q50 since its original launch.

A Seven-Speed Automatic, Not a Twin-Clutch

Unlike some of its dual-clutch-equipped European competitors, the Red Sport 400 relies on a conventional seven-speed automatic transmission, tuned for quicker shifts than the standard Q50 but still prioritizing smoothness and daily livability over the raw immediacy of a twin-clutch gearbox. That choice reflects Infiniti’s broader positioning of the Q50 as a genuine daily driver first, performance sedan second.

Where the Q50 Fits in Infiniti’s Broader Lineup

The Q50 Red Sport 400 shares its twin-turbo V6 architecture with the two-door Q60 Red Sport, giving Infiniti a coupe-and-sedan pairing built around the same core performance hardware, similar to how German rivals mirror sedan and coupe variants across their own performance sub-brands. That shared powertrain strategy let Infiniti spread development costs across two body styles rather than engineering a standalone performance sedan.

Interior Refinements Buyers Actually Noticed

Reviewers highlighted the redesigned shifter, updated ambient lighting, and refreshed trim materials as genuine improvements over the outgoing model, even as the fundamental cabin layout carried over largely unchanged — incremental updates rather than a full redesign, consistent with a mid-cycle refresh rather than an all-new generation.

The Exhaust Question Buyers Kept Asking About

Infiniti’s two dealer-installed exhaust options for the Red Sport 400 let buyers dial in a more aggressive sound without voiding the factory warranty, addressing a common early criticism that the Q50’s turbocharged V6 sounded too muted compared to naturally aspirated rivals. It’s a small but telling detail about how closely Infiniti was listening to owner feedback between model years.

Standard Safety Tech Across the Refreshed Lineup

Alongside ProPilot Assist, the 2018 refresh carried forward Infiniti’s broader suite of standard and available driver-assistance features, including forward collision warning and blind-spot monitoring, reflecting how quickly that kind of technology moved from luxury-brand differentiator to base-level expectation across the segment.

Resale Value in a Shrinking Sedan Market

Performance sedans like the Q50 Red Sport 400 have faced a genuinely tough resale environment as SUV and crossover demand has reshaped the market, meaning buyers cross-shopping this car against its German rivals should weigh long-term depreciation as carefully as the first-drive impressions themselves.

A Sedan That Rewards a Test Drive

First-drive reviewers were consistent on one point regardless of how they felt about the steering feel: the Q50 Red Sport 400 is a car that reads better from behind the wheel than on a spec sheet, which is exactly the kind of car worth a dealership test drive before ruling it out.

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