Mazda6 20S (GJEFP) – Specifications & Buyer's Guide

Introduction

The Mazda6 20S (model code GJEFP) is the Japanese-market Mazda6 sedan offered from 2019. With a near‑5‑metre length and Mazda’s contemporary design language, the 20S targets buyers who want a roomy executive sedan that balances comfort and efficiency. This guide focuses on verified specifications for the GJEFP 20S and gives practical advice for international buyers searching Japanese auctions or used-car listings.

Mazda6 20S (GJEFP) Overview

The Mazda6 sedan carrying model code GJEFP was introduced for the Japanese market with a production start date in 2019. Positioned above compact sedans, this generation emphasizes refined styling, passenger space, and a comfortable highway ride. The 20S grade is the mid-level variant in Mazda’s line-up for this period and is commonly seen in Japanese used‑car auctions and dealer listings.

Mazda6 20S (GJEFP) Specifications

Engine and Performance

The verified mechanical package for the Mazda6 20S (GJEFP) lists a 1,997 cc engine paired with a 6‑speed automatic transmission and front‑wheel drive. These confirmed items define the car’s principal performance characteristics: a naturally aspirated mid‑size sedan configuration tuned for smooth power delivery and comfortable cruising.

Because specific output figures (PS/hp) and torque were not in the verified data, this guide avoids quoting engine power. In general terms, a 2.0‑litre Mazda petrol engine from this era is tuned for a balance of responsiveness and economy rather than outright sports performance. The 6AT transmission provides familiar automatic shift behaviour suitable for city and highway driving. Buyers should test drive the car they are considering to evaluate throttle response, transmission shift quality, and NVH (noise, vibration, harshness) levels.

Exterior Design and Dimensions

The Mazda6 20S (GJEFP) follows Mazda’s Kodo design language with elongated proportions, a long bonnet, and a sleek roofline that give the sedan a premium presence. The confirmed exterior dimensions—4,865 mm long, 1,840 mm wide, and 1,450 mm tall—place the car solidly in the mid‑to‑large sedan class. The substantial wheelbase contributes to rear‑seat space and straight‑line stability.

From a practical standpoint, the roomy trunk and long body make the Mazda6 a strong option for buyers who prioritise luggage capacity and relaxed long‑distance travel. Visual highlights often found on this generation (subject to trim) include LED lighting, chrome detailing around the grille, and refined alloy wheel designs; however, specific exterior equipment for the 20S grade should be confirmed from the exact vehicle listing.

Interior, Comfort and Technology

Verified cabin details were not included in the source data. Typically, Mazda6 sedans of this era offer a driver‑focused cockpit, quality soft‑touch materials, and comfortable seating for adults in both front and rear rows. Depending on grade and options, features could include touchscreen infotainment, automatic climate control, and driver assistance aids, but such items must be confirmed per vehicle.

When evaluating a used Mazda6 20S, check the exact trim sheet or dealer listing for factory options like leather, heated seats, Bose or premium audio packages, and advanced safety systems. Inspect interior condition carefully—seat wear, electronics operation, and any water damage are important to assess.

Fuel Economy and Everyday Practicality

Official fuel economy figures (JC08 or WLTC) for the GJEFP 20S were not included in the verified dataset and therefore are not stated here. The confirmed 1,997 cc engine and front‑wheel drive layout suggest the car was aimed at a balance of fuel efficiency and refinement suitable for daily commuting and longer trips.

For everyday practicality, the Mazda6’s large exterior dimensions translate to good cabin and trunk space. The 6‑speed automatic is straightforward for city driving, while the car’s weight (about 1,510 kg) indicates a stable, planted ride at speed. Prospective buyers should confirm recommended fuel type and official consumption figures with the seller and consider arranging a real‑world test drive in conditions similar to their typical use.

Is the Mazda6 20S (GJEFP) a Good Used Car to Buy?

Strengths

• Spacious sedan with executive styling and a comfortable ride.
• Proven 2.0‑litre layout combined with an automatic gearbox for everyday usability.
• Readily available on Japanese auction markets and dealer listings in major regions.

Limitations

• Specific performance and fuel economy figures need to be verified per vehicle.
• Optional equipment and safety packages vary between individual cars—confirm before buying.
• Import costs, compliance with local regulations, and spares availability differ by destination country.

Inspection checklist for buyers

• Verify the VIN/model code matches GJEFP on registration and auction sheets.
• Confirm service history and check for accident or flood damage via a reliable history report.
• Test all electronics, climate control, and infotainment functions.
• Inspect suspension, brakes, and tyre condition; listen for transmission or engine noises during a test drive.
• Ensure any advertised options are factory fitted (certificates or dealer paperwork help).

Frequently Asked Questions

• What engine does this model use? The Mazda6 20S (GJEFP) is fitted with a 1,997 cc engine (confirmed).

• How much horsepower does it produce? Horsepower (PS/hp) and torque figures were not available in the verified data and should be checked with the seller or official specification sheet.

• Is this model front‑wheel drive or all‑wheel drive? The verified drivetrain for the GJEFP 20S is FF (front‑wheel drive).

• What transmission is fitted? A 6‑speed automatic transmission (6AT) is the confirmed transmission.

• How fuel‑efficient is it? Official JC08 or WLTC fuel economy figures were not supplied in the verified dataset. Confirm official consumption with the seller or manufacturer documentation.

• Is this vehicle suitable for daily driving? Yes—its engine, automatic gearbox, and size make it well suited to daily commuting and long highway trips, but verify the specific condition and options of each used car.

• What should buyers check before importing one from Japan? Verify the vehicle identification (GJEFP code), full service history, accident and flood history, odometer status, and local import compliance. Also obtain a price breakdown including shipping, taxes, and homologation fees.

Final Verdict

The Mazda6 20S (GJEFP) is a compelling choice for buyers who want a roomy, refined sedan from the Japanese market. Its 2.0‑litre engine and 6‑speed automatic make it practical for daily use, while the sizeable body provides passenger and luggage space for longer trips. Because some key technical figures and equipment lists were not included in the available data, always confirm power, torque, fuel economy, and fitted options with the seller before committing.

Check Your Japanese Car History Before Buying

Buying a used car from Japan? Before making your purchase, check the vehicle's history to help make a more informed decision.

Visit AutoCheck.jp to check the available history of the Japanese vehicle you are considering.

Check your Japanese car history at AutoCheck.jp before you buy.