Used Mazda6 vs. Used Hyundai Sonata: An Honest Comparison From the Dealer Who Sells Both
Almost nobody can compare these honestly — dealers usually sell one brand or the other. Doug’s in Lynnwood sells and services both, so here is the straight version, and you can drive a used Mazda6 and a used Hyundai Sonata back-to-back in one appointment.
The used Mazda6 (2018–2021) is the driver’s pick among these midsize sedans; the used Hyundai Sonata (2020+) is newer on average, with a bigger 16.0 cu ft trunk and a hybrid rated around 47–52 mpg combined.
Mazda discontinued the Mazda6 in the US after 2021, so Sonatas are generally the newer used option with more remaining basic warranty.
Doug’s in Lynnwood services both brands in-house, so either sedan comes with a shop that knows it.
At a glance
| Specification | Mazda6 | Hyundai Sonata |
|---|---|---|
| Generation covered | 2018–2021 (discontinued in the US after 2021) | 2020+ generation |
| Seats | 5 | 5 |
| Cargo space | Trunk 14.7 cu ft | Trunk 16.0 cu ft |
| Drivetrain | FWD only | FWD (AWD added on 2025 models) |
| Powertrains | 2.5L 4-cyl (187 hp); 2.5L turbo (227–250 hp) | 2.5L 4-cyl (191 hp); 1.6L turbo (180 hp); Hybrid (192 hp net); N-Line (290 hp) |
| EPA fuel economy | EPA about 26–29 mpg combined | EPA about 28–32 mpg combined (non-hybrid); about 47–52 for the Hybrid |
| Factory warranty for used buyers | 3-yr/36k-mi basic + 5-yr/60k-mi powertrain from original sale; both transfer in full to used buyers. | 5-yr/60k-mi basic transfers to used buyers; the 10-yr/100k-mi powertrain warranty is original-owner only (second owners: 5-yr/60k powertrain). |
| Known for | Handling and cabin quality among midsize sedans of its years | Big trunk, standout hybrid economy, strong feature value |
Sources: manufacturer specifications and EPA estimates for the model generations noted above. Figures vary by year and trim — we’ll confirm the exact numbers for any specific vehicle on our lot.
What ownership actually costs
- Fuel: use the EPA combined figures in the table — over 12,000 miles a year, a 5-mpg difference is roughly a tank a month.
- Warranty: Mazda’s remaining coverage transfers in full. Hyundai’s basic 5-yr/60k transfers, but the famous 10-yr/100k powertrain warranty is original-owner only — as a used buyer, plan around 5-yr/60k powertrain on either brand.
- Maintenance: both are mainstream brands with similar routine service costs, and both are serviced in-house at Doug’s — no dealership-hopping for warranty or recall work.
- Insurance: varies more by trim, driver, and ZIP code than by brand — get real quotes on the exact VIN before you decide.
Which one is right for you?
The Mazda6 fits you if…
- You want the best-driving used midsize sedan of its years
- Cabin feel matters more than model-year freshness
The Hyundai Sonata fits you if…
- You want the newer car, bigger trunk, or the 47+ mpg hybrid
- You want more remaining basic warranty on average
Both, in stock right now
Used Mazda6 at Doug’s
In stock as of Jul 10, 6:09 am
No exact matches for this pick right now, so here are the nearest alternatives. New inventory arrives regularly — see everything in stock.
Browse the full inventory — it refreshes from the dealership feed several times a day.
Used Hyundai Sonata at Doug’s
In stock as of Jul 10, 6:09 am
No exact matches for this pick right now, so here are the nearest alternatives. New inventory arrives regularly — see everything in stock.
Browse the full inventory — it refreshes from the dealership feed several times a day.
Fair questions
Can I test drive a used Mazda6 and a used Hyundai Sonata in one visit?
Yes. Doug’s Mazda and Doug’s Hyundai are one lot family in Lynnwood, so one appointment covers both — back-to-back, same loop, no second dealership visit.
Which has the better warranty for a used buyer?
It depends on age and mileage, not just brand. Mazda’s 3-yr/36k basic and 5-yr/60k powertrain coverage transfer in full. Hyundai’s 5-yr/60k basic transfers too, but its 10-yr/100k powertrain warranty applies to the original owner only. We’ll show you the exact remaining coverage on any specific vehicle.
Is the Mazda6 or the Hyundai Sonata cheaper to run?
Check the EPA figures in the table above — hybrids are the standout savers where available. Routine maintenance costs are similar for both brands, and both are serviced in-house at Doug’s.
Is this comparison biased toward one brand?
We sell and service both, so we have no reason to steer you either way — the facts above come from manufacturer specs and EPA estimates, and the better choice genuinely depends on how you’ll use the vehicle.
Drive the Mazda6 and the Hyundai Sonata back-to-back — one appointment
Same lot family, same visit, no repeated negotiations. Tell us a time that works and we’ll have both vehicles ready.