Hyundai Ioniq 5 vs Acura MDX: Size Comparison & Dimensions
Choosing between the Hyundai Ioniq 5 and Acura MDX? These are two very different vehicles. The Ioniq 5 is a modern electric SUV, while the MDX is a luxury three-row gas-powered SUV. Let’s compare their dimensions to help you decide which one fits your needs better.
Quick Overview
Hyundai Ioniq 5: A mid-size electric crossover with futuristic styling and a spacious cabin Acura MDX: A three-row luxury SUV designed for families who need maximum seating and cargo space
Exterior Dimensions Comparison
Length
Hyundai Ioniq 5:
- Length: 182.5 inches (4,635 mm)
Acura MDX:
- Length: 196.2 inches (4,983 mm)
Winner: Acura MDX (13.7 inches longer)
The MDX is significantly longer, which makes sense since it needs to accommodate a third row of seats. The extra length gives families more interior space but also means the MDX needs more parking space.
Width
Hyundai Ioniq 5:
- Width (without mirrors): 74.4 inches (1,890 mm)
- Width (with mirrors): 86.6 inches (2,200 mm)
Acura MDX:
- Width (without mirrors): 77.7 inches (1,974 mm)
- Width (with mirrors): 84.6 inches (2,149 mm)
Winner: Acura MDX (3.3 inches wider without mirrors)
The MDX is wider, providing more shoulder room inside. Interestingly, the Ioniq 5 is wider when you include the mirrors, which might matter in tight garage spaces.
Height
Hyundai Ioniq 5:
- Height: 63.2 inches (1,605 mm)
Acura MDX:
- Height: 68.1 inches (1,730 mm)
Winner: Acura MDX (4.9 inches taller)
The MDX’s extra height gives passengers more headroom, especially in the third row. The Ioniq 5’s lower profile gives it a sportier, sleeker look.
Wheelbase
Hyundai Ioniq 5:
- Wheelbase: 118.1 inches (3,000 mm)
Acura MDX:
- Wheelbase: 111.0 inches (2,820 mm)
Winner: Hyundai Ioniq 5 (7.1 inches longer)
This is surprising! Despite being shorter overall, the Ioniq 5 has a longer wheelbase. This is thanks to its electric platform design, which allows for more interior space without adding overall length.
Ground Clearance
Hyundai Ioniq 5:
- Ground Clearance: 6.3 inches (160 mm)
Acura MDX:
- Ground Clearance: 7.3 inches (185 mm) with AWD
- Ground Clearance: 6.9 inches (175 mm) with FWD
Winner: Acura MDX
The MDX offers better ground clearance, making it more capable on rough roads or light off-road trails.
Interior Dimensions Comparison
Seating Capacity
Hyundai Ioniq 5:
- Seats: 5 passengers
Acura MDX:
- Seats: 7 passengers (3 rows)
Winner: Acura MDX
If you need to carry more than five people regularly, the MDX is your only option here. The third row can fit adults for short trips or kids comfortably.
Front Row
Hyundai Ioniq 5:
- Front Headroom: 40.9 inches
- Front Legroom: 41.5 inches
- Front Shoulder Room: 58.3 inches
Acura MDX:
- Front Headroom: 40.1 inches
- Front Legroom: 41.4 inches
- Front Shoulder Room: 61.4 inches
Winner: Mixed
The Ioniq 5 has slightly more headroom and legroom up front, but the MDX offers more shoulder room for wider passengers.
Second Row
Hyundai Ioniq 5:
- Second Row Headroom: 38.4 inches
- Second Row Legroom: 41.5 inches
- Second Row Shoulder Room: 56.9 inches
Acura MDX:
- Second Row Headroom: 38.5 inches
- Second Row Legroom: 38.4 inches
- Second Row Shoulder Room: 60.3 inches
Winner: Mixed
The Ioniq 5 offers more legroom (3.1 inches more!), while the MDX provides more shoulder room. Both are comfortable for adults.
Third Row
Hyundai Ioniq 5:
- No third row
Acura MDX:
- Third Row Headroom: 36.8 inches
- Third Row Legroom: 28.0 inches
- Third Row Shoulder Room: 53.4 inches
The MDX’s third row is best for children or teenagers. Adults can fit for short trips, but it’s tight.
Cargo Space Comparison
Cargo Volume
Hyundai Ioniq 5:
- Cargo space behind second row: 27.2 cubic feet
- Cargo space with second row folded: 59.3 cubic feet
- Front trunk (frunk): 0.7 cubic feet (AWD models)
Acura MDX:
- Cargo space behind third row: 16.3 cubic feet
- Cargo space behind second row: 48.4 cubic feet
- Cargo space with all rows folded: 95.0 cubic feet
Winner: Acura MDX (for total volume)
The MDX offers significantly more cargo space when all seats are folded. However, the Ioniq 5 provides more usable cargo space for daily driving (5-passenger configuration) than the MDX with the third row up.
Cargo Floor
Hyundai Ioniq 5:
- Flat cargo floor when seats folded
- Lower load floor (easier to load heavy items)
Acura MDX:
- Slight angle when seats folded
- Higher load floor
Winner: Hyundai Ioniq 5
The Ioniq 5’s completely flat cargo floor and lower height make loading easier.
Practical Size Differences
Parking and Maneuverability
Hyundai Ioniq 5:
- Turning circle: 36.4 feet
- Easier to park due to shorter length
- Better visibility thanks to lower hood
Acura MDX:
- Turning circle: 38.9 feet
- Needs more space for parking and U-turns
- Parking sensors and cameras help
Winner: Hyundai Ioniq 5
The Ioniq 5 is easier to maneuver in tight spaces and parking lots.
Garage Fit
Both vehicles will fit in a standard garage, but:
- The MDX needs about 1 foot more length
- The Ioniq 5 needs slightly more width clearance (with mirrors)
- The MDX is 5 inches taller
Towing Capacity
Hyundai Ioniq 5:
- No official towing capacity in the US (not recommended)
Acura MDX:
- Towing capacity: 5,000 pounds (when properly equipped)
Winner: Acura MDX
If you need to tow a boat, trailer, or camper, the MDX is the clear choice.
Weight Comparison
Hyundai Ioniq 5:
- Curb Weight: 4,100 – 4,900 pounds (depending on battery and drivetrain)
Acura MDX:
- Curb Weight: 4,500 – 4,700 pounds (depending on drivetrain)
The Ioniq 5 with a large battery and AWD can be heavier due to the battery pack.
Who Should Choose Each Vehicle?
Choose the Hyundai Ioniq 5 if:
- You need a 5-passenger vehicle
- You want a spacious, modern electric SUV
- You value easy parking and maneuverability
- You have a shorter commute and can charge at home
- You prefer a lower, more car-like driving position
- You want a flat cargo floor for easy loading
- You don’t need to tow anything
Choose the Acura MDX if:
- You need seating for 6-7 passengers
- You want maximum cargo capacity
- You need to tow a trailer or boat
- You take long road trips frequently
- You prefer a higher driving position
- You need more ground clearance
- You want a traditional luxury SUV experience
The Bottom Line
The Hyundai Ioniq 5 and Acura MDX are sized for different purposes:
Ioniq 5: Compact length but spacious interior thanks to its electric platform. Perfect for smaller families who want modern technology and electric efficiency.
MDX: True family hauler with three rows and massive cargo capacity. Ideal for larger families or those who need maximum versatility.
Neither is “better” overall—it depends on your needs:
- Need 7 seats? → MDX
- Want electric? → Ioniq 5
- Need to tow? → MDX
- Easier parking? → Ioniq 5
- Maximum cargo? → MDX
- Daily 5-passenger driving? → Ioniq 5
Consider how many passengers you typically carry, whether you need towing capability, and how important electric power is to you. Both are excellent vehicles—just designed for different lifestyles.