Short answer: the Hyundai Sonata (2019) is bigger — it is 1 cm longer, 0.7 cm wider and 0.5 cm taller than the Nissan Altima (2018).

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Nissan Altima vs Hyundai Sonata

Nissan Altima Sixth generation · 2018 · SedanHyundai Sonata Eighth generation · 2019 · Sedanaligned at front bumper + ground · same scale
Nissan Altima · 490 cmHyundai Sonata · 491 cm Nissan Altima · 144 cmHyundai Sonata · 144.5 cm
Nissan Altima Sixth generation2018–present · Sedan
Length490 cm16 ft 1 in4,900 mm1 cm shorter
Width185.2 cm6 ft 1 in1,852 mm0.7 cm narrower
Width incl. mirrors—no data
Height144 cm4 ft 9 in1,440 mm0.5 cm lower
Wheelbase282.4 cm9 ft 3 in2,824 mm1.6 cm shorter wheelbase
Ground clearance—no data
Boot (seats up)436 L US cu ft, converted6 L less boot space
Boot (seats folded)—no data
Weight1,435 kg US curb weight47 kg heaviervaries by version
Hyundai Sonata Eighth generation2019–present · Sedan
Length491 cm16 ft 1 in4,910 mm1 cm longer
Width185.9 cm6 ft 1 in1,859 mm0.7 cm wider
Width incl. mirrors—no data
Height144.5 cm4 ft 9 in1,445 mm0.5 cm taller
Wheelbase284 cm9 ft 4 in2,840 mm1.6 cm longer wheelbase
Ground clearance13.5 cm0 ft 5 in135 mm 
Boot (seats up)442 L US cu ft, converted6 L more boot space
Boot (seats folded)—no data
Weight1,388 kg US curb weight47 kg lightervaries by version

Dimensions may vary by trim, market and model year. For guidance only — check with the manufacturer before you buy. Sources are listed on each car's page.

Nissan Altima (2018) vs Hyundai Sonata (2019): the differences

Will they fit? UK parking bay and garage

CarParking bay 4.8 × 2.4 mSingle garage, 7 ft door
Nissan Altima (2018)Doesn't fitDoesn't fitcheck my garage
Hyundai Sonata (2019)Doesn't fitDoesn't fitcheck my garage

Assumes a UK standard parking bay of 4.8 × 2.4 m and a typical UK single garage of 4.8 × 2.4 m inside (2.1 m high) with a 7 ft × 6 ft 6 in (213 × 198 cm) up-and-over door. Where we have no width-with-mirrors figure we add 20 cm to the body width. “Comfortably” leaves about 60 cm to walk round and open a door; “tight” means it goes in but getting out is awkward. Garages and bays vary a lot — measure yours and use the garage fit checker. For guidance only.

See the full specifications and sources: Nissan Altima (2018) · Hyundai Sonata (2019). Dimensions may vary by trim, market and model year.

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