How many pieces does the LEGO Mermaid Roller Coaster Ride (42703-1) have?

The LEGO Mermaid Roller Coaster Ride set (42703-1) contains 874 pieces. It was released in 2026 as part of the LEGO Friends theme.

How can I find missing parts for LEGO set 42703-1?

On BrickMissing you can check which parts from the LEGO Mermaid Roller Coaster Ride (42703-1) you already own. Add your LEGO collection and we'll show exactly which of the 874 pieces you're missing and which you already have.

Can I build the LEGO Mermaid Roller Coaster Ride with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 874 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Mermaid Roller Coaster Ride from?

The LEGO Mermaid Roller Coaster Ride (42703-1) belongs to the LEGO Friends theme. You can browse all Friends sets on BrickMissing to find more sets from this theme.

Mermaid Roller Coaster Ride

42703-1 Friends 2026 874 parts 14.3% catalog rarity Advanced

LEGO Friends Mermaid Roller Coaster Ride (42703) sends a coaster around a rotating pool where two mermaids perform. The entrance includes a ticket point and park map, with photos and bubble tea among the details for a day at the park. Autumn has a changeable face for calm or excited expressions; Leo and Liann join her on the visit. Mermaid characters Serina and Azuria have shimmering hair. A narwhal toy accessory and sea animals carry the underwater theme from the central pool into the rest of the attraction.

View at LEGO.com € 99,99→ lego.com

42703-1

3D build progress

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Parts Inventory

🧱 874 parts

Showing the first 12 rows of the parts list (874 pieces in total). The full list loads automatically.

Color	Qty	LEGO price each
Black	2×	€0,15 View at LEGO → View
Black	2×	Check price → View
Black	1×	Check price → View
Black	1×	€0,16 View at LEGO → View
Black	1×	Check price → View
Black	3×	€0,17 View at LEGO → View
Black	1×	€0,90 View at LEGO → View
Black	1×	Check price → View
Black	1×	€0,22 View at LEGO → View
Black	9×	€0,06 View at LEGO → View
Black	5×	€0,08 View at LEGO → View
Tan	5×	€0,29 View at LEGO → View

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Catalog rarity

How common are the parts in Mermaid Roller Coaster Ride?

14.3%High rarity

more commonless common

32 of 223 recorded part+color combinations appear in 3 or fewer sets in our catalog. This does not measure replacement availability or price.

Theme average

6.1%

All sets

6.7%

Least common in our catalog

BRICK 1X2X5 · Medium Azur · only this set in our catalogPlate 6 x 10 · Medium Azur · only this set in our catalogBRICK W. BOW 1X8X2 · Dark Purple · only this set in our catalog

How we calculate this →