WP Engine and SiteGround are sometimes compared as if they're in the same category. They're not. One is managed enterprise WordPress hosting. The other is quality shared hosting with strong WordPress tooling. Here's what differentiates them — and who should be on which.
Speed Test Results
| Metric | WP Engine (Startup) | SiteGround (GrowBig) |
|---|---|---|
| TTFB — US East | 384ms | 412ms |
| TTFB — EU West | 401ms | 441ms |
| TTFB — Singapore | 409ms | 471ms |
| Average TTFB | 398ms | 441ms |
| LCP (caching on) | 1.0s | 1.6s |
| 30-Day Uptime | 99.98% | 99.98% |
| Starting price | $30/mo | $2.99/mo* |
*SiteGround's intro price. Renewal for GrowBig is $17.99/mo.
WP Engine is 10% faster on TTFB and significantly faster on LCP with caching enabled (1.0s vs 1.6s). The LCP gap matters more than TTFB for Core Web Vitals scoring.
What You're Actually Paying For With WP Engine
At $30/mo (vs SiteGround's $17.99/mo renewal), you're paying for:
Dedicated PHP workers. WP Engine plans include a defined number of PHP workers that aren't shared with other customers. SiteGround's PHP pool is shared on their shared hosting tiers — during traffic spikes from other customers on the server, your PHP execution slows.
Global CDN with EverCache. WP Engine's EverCache technology does full-page HTML caching at the CDN layer — meaning cache hits never hit PHP at all. SiteGround's SuperCacher is server-level, not edge-level. This is why the LCP gap is larger than the TTFB gap.
Multi-environment workflow. WP Engine gives you separate development, staging, and production environments as part of your plan. SiteGround gives you one staging environment. For any site with active development, the ability to test in a true staging environment before pushing to production reduces the risk of breakage.
Developer tooling. WP Engine integrates with Git, has a local development environment (Local by Flywheel, now just called Local), and has an API for managing sites programmatically. SiteGround's developer tools are more limited.
Where SiteGround Outperforms Its Price Point
SiteGround is not a cheap host that happens to support WordPress. Their WordPress tooling is genuinely good:
Automatic WordPress updates with staging test. SiteGround updates WordPress core automatically and runs a quick functional check before committing. If it breaks something, they roll back. WP Engine does this too, but SiteGround does it on a plan that costs $2.99/mo introductory.
Free CDN + Cloudflare integration. SiteGround includes a CDN and Cloudflare integration on all plans. Not Cloudflare Enterprise like Kinsta, but functional Cloudflare caching.
Email included. WP Engine doesn't host email. SiteGround does. If you're hosting client sites with email, SiteGround removes one line item from your client's hosting bill.
Support consistency. SiteGround's support has been consistently good in our experience — not WP Engine-level, but better than most shared hosts. Their WordPress-trained support team actually knows what wp-config.php is.
The Real Cost Comparison
| Period | WP Engine | SiteGround GrowBig |
|---|---|---|
| Month 1–12 | $30/mo | $2.99/mo ($35.88/yr) |
| Month 13+ | $30/mo | $17.99/mo |
| 2-Year Total | $720 | $251.76 |
Over two years, WP Engine costs $468 more than SiteGround. The question is whether the performance and features are worth $19.50/mo extra at renewal pricing.
For most use cases, the answer is no. For specific use cases, it's clearly yes.
Who Should Be on SiteGround
- Informational/portfolio sites — the 43ms TTFB difference at this traffic level is irrelevant
- New WordPress users — SiteGround's onboarding, support quality, and WordPress tooling are excellent for getting started
- Budget-constrained sites — clients who genuinely can't justify $30/mo for hosting
- Sites that need email hosting — WP Engine's lack of email hosting is a real gap
Who Should Be on WP Engine
- Active development sites — multi-environment workflow, Git integration, Local development tool
- Sites with compliance requirements — HIPAA, SOC 2, PCI documentation for enterprise/healthcare clients
- Genesis Framework agencies — WP Engine owns StudioPress; you get the full theme library
- High-traffic WooCommerce — dedicated PHP workers and EverCache deliver meaningfully better dynamic performance
- Multi-developer projects — separate dev/staging/prod environments prevent overwriting each other's work
The Honest Comparison
If you're comparing WP Engine and SiteGround for a personal blog or small business site, SiteGround is the right answer. The price difference doesn't buy enough performance improvement to justify it.
If you're an agency building and maintaining client sites actively, WP Engine's developer tooling pays for itself. The time you save with proper staging environments, Git integration, and reduced "staging broke production" incidents is worth more than $19.50/mo.
The mistake I see: agencies putting client sites on SiteGround to save $15/mo, then spending an hour per month fixing broken staging pushes. At any agency billing rate, that hour costs more than $15.