Running TikTok Lead Gen for vehicle exports to Algeria, CPL is great but lead quality is poor. Looking for MOF/BOF funnel advice.

Running a lead generation campaign for Toyota Hilux GR Sport (diesel, LHD) targeting Algeria. Objective is Instant Form leads — the end goal is an actual export inquiry, not an impulse buy. High-consideration, B2B/individual buyer mix.

Where we are:

- TOF (cold, broad Algeria): AED 12–13 CPL, ~6 leads/day, algorithm fully optimised post-learning phase

- MOF retargeting (custom audience: 50%+ video viewers, 30 days): AED 7–8 CPL, outperforming TOF significantly

- Combined blended CPL: AED 12 (~$3.30 USD)

The problem:

Lead volume looks solid on paper, but quality is low. Most form submissions are incomplete, vague, or from people who clearly don't have purchase intent. We're running a native TikTok Instant Form — short, frictionless. That's probably part of it.

What we've tried:

- UGC in Darija + Arabic outperforms AI/branded video 3.5× on CPL

- MOF retargeting layer launched ~3 days ago and is already converting cheaper than TOF

- No BOF layer yet

Questions for the community:

1. For high-consideration products (vehicle export, $20k+ purchase), has anyone found a way to improve lead quality on TikTok Instant Forms without killing volume? Adding more form fields? Switching to website leads instead?

1. For the MOF→BOF funnel: what's working for you as a BOF retargeting audience? We're thinking of targeting people who filled the form but didn't follow up — but TikTok's lead event retargeting feels limited compared to Meta.

1. Is it worth running a separate BOF ad group with a longer-form landing page instead of an Instant Form, even if CPL goes up significantly?

Any experience with lead gen for high-ticket or export products on TikTok would be really helpful. Happy to share more data if useful.