
SAADAA × OPTIPHOENIX: A SIZE SELECTION REDESIGN DROVE A 20% CONVERSION RATE UPLIFT

Mr. Tuning’s mobile store lets shoppers find products by vehicle make and model through the hamburger menu. On mobile, that menu opened level by level. A shopper could expand a make or a model, but there was no way to go straight to that top-level or mid-level category page from the menu. Every route to a category page meant going back out of the menu first.

OptiPhoenix partnered with Mr. Tuning to test whether a direct link inside the menu would reduce that friction and improve conversion.
A navigation menu should shorten the path to products. This one only expanded.
A shopper who picked a make such as Audi, or a model within it, could keep opening sub-levels. But they could not open the page for that make or model itself. So the gap sat between a shopper who knew which vehicle they wanted and a menu that offered no direct exit to that vehicle’s products.
OptiPhoenix proposed adding a “View All” CTA to the hamburger menu, so users could go directly to top-level and mid-level category pages. This was expected to simplify product discovery, reduce navigation friction, and lift conversion.

OptiPhoenix ran a controlled A/B test on the Mr. Tuning mobile hamburger menu, with all users in the segment.

Variant A (Control): The original menu. Makes and models expanded to show sub-levels, with no direct link to their category pages.
Variant B (Test): A “View All” CTA added beside each make and model in the vehicle menu. It took users straight to the matching category page.
Metrics measured: Conversion Rate, orders, Revenue, Average Order Value (AOV), Revenue per Visitor, menu clicks at each level, and interaction with the “View All” CTA.
Giving shoppers a direct route out of the menu moved more of them to a purchase.

Conversion Rate rose from 3.88% to 4.20%, an 8.25% increase. Orders rose 7.91%. Revenue rose 11.48%, with AOV up 2.14% and Revenue per Visitor up 11.72%. The variation had a 94.58% probability of being the best-performing version, against 5.42% for the control.
Menus should offer a way out, not only a way down. Shoppers who already knew their vehicle could reach its products in one tap. Expanding level after level added steps for them.

Revenue moved with conversion. Orders rose 7.91% and AOV rose 2.14%, so the gain came from more orders and slightly larger ones. Revenue per Visitor rose 11.72%, which shows the lift held across all incoming traffic.
Read the confidence measure with care. This test reports a 94.58% probability that the variation is best, which is a different measure from statistical significance. It is a strong signal, and continued monitoring would confirm the size of the lift.

Mr. Tuning’s mobile shoppers were not short of ways into the catalogue. They were short of a direct way to a vehicle’s product page. By adding a “View All” CTA to the hamburger menu, OptiPhoenix removed that gap. Conversion Rate rose 8.25% and Revenue rose 11.48%.

